Vegetable Cultivar Descriptions for North America List 26 2002 Edited by Todd C
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Advances on Research Epigenetic Change of Hybrid and Polyploidy in Plants
African Journal of Biotechnology Vol. 10(51), pp. 10335-10343, 7 September, 2011 Available online at http://www.academicjournals.org/AJB DOI: 10.5897/AJB10.1893 ISSN 1684–5315 © 2011 Academic Journals Review Advances on research epigenetic change of hybrid and polyploidy in plants Zhiming Zhang†, Jian Gao†, Luo Mao, Qin Cheng, Zeng xing Li Liu, Haijian Lin, Yaou Shen, Maojun Zhao and Guangtang Pan* Maize Research Institute, Sichuan Agricultural University, Xinkang road 46, Ya’an, Sichuan 625014, People’s Republic of China. Accepted 15 April, 2011 Hybridization between different species, and subsequently polyploidy, play an important role in plant genome evolution, as well as it is a widely used approach for crop improvement. Recent studies of the last several years have demonstrated that, hybridization and subsequent genome doubling (polyploidy) often induce an array of variations that could not be explained by the conventional genetic paradigms. A large proportion of these variations are epigenetic in nature. Epigenetic can be defined as a change of the study in the regulation of gene activity and expression that are not driven by gene sequence information. However, the ramifications of epigenetic in plant biology are immense, yet unappreciated. In contrast to the ease with which the DNA sequence can be studied, studying the complex patterns inherent in epigenetic poses many problems. In this view, advances on researching epigenetic change of hybrid and polyploidy in plants will be initially set out by summarizing the latest researches and the basic studies on epigenetic variations generated by hybridization. Moreover, polyploidy may shed light on the mechanisms generating these variations. -
Characteristics of a Good Breeder
WHAT CHARACTERIZES A GOOD BREEDER? By Carissa Kuehn Looking for a German Shepherd puppy? It can be a daunting task; there are endless numbers of “breeders” out there with all sorts of claims to fame: “specializing in blacks and black sables”, “top-rated show line dogs”, “top- rated working dogs”, “specializing in huge „Old World‟ German Shepherds”. How does one make sense of it all? fter spending a total of six years A searching for and investigating my GSD breeder—and finally getting a puppy from her that I have since taken all the way from BH to IPO3 at the Regional and National championship levels as a first time handler—I have learned many things about good breeders that I wish to share. There are several key characteristics and attributes that set a GOOD BREEDER apart from all those other “breeders” out there. My hope is that this article helps guide you in selecting a good breeder who works tirelessly to produce good German Shepherd Dogs that are all a German Shepherd should be. I hope that it also helps you avoid those breeders who are either just in it for the money, or have no real knowledge about and experience in breeding good German Shepherd Dogs. The author with “Axel”, competing at the 2013 USCA GSD IPO3 National Whether you want a stable, well-bred Championship (first National event as a first-time handler with her first GSD German Shepherd Dog for a companion, ever. A combination of a good breeder, a good dog, and a good training team!). -
Insights Into Breed Standards Written by Dr Al Grossman and Reprinted with Permission
Breeders’ Briefcase by Amy & Bonnie Insights Into Breed Standards Written by Dr Al Grossman and reprinted with permission We have all heard a variety of finish its championship. references to soundness. It may be, “I It is practically impossible to divorce don’t care for so and so’s dog but he type from soundness completely, is sound”, or “isn’t so and so lovely, for it might be said that soundness and so sound too.” Various words have is the cause and type the effect. I been used to define “sound.” Some have always used the analogy from of them are (1) free from flaw, defect home building that soundness is or decay, undamaged or unimpaired, the basement and framework of (2) healthy, not weak or diseased, the building. Type is the goodies robust of body and mind. Continuing, added on to make it a livable house. there are flawless, perfect, sturdy, Expression, coat, etc. define your dependable, reliable, etc. Are you final impression of the dog. beginning to get the picture? It should be pointed out that a sound Most breeds have been bred for a dog is not necessarily championship purpose, and as such, is required to material, since the word “show” have the stamina and traits necessary itself connotes that a little more is to perform its function, coupled required. with the necessary instincts. Thus, soundness should mean that the Generally speaking, when a breeder animal is able to carry out the job for describes a sound specimen, he which it is intended. It should mean means a dog without a major fault. -
A Growing Problem Selective Breeding in the Chicken Industry
A GROWING PROBLEM SELECTIVE BREEDING IN THE CHICKEN INDUSTRY: THE CASE FOR SLOWER GROWTH A GROWING PROBLEM SELECTIVE BREEDING IN THE CHICKEN INDUSTRY: THE CASE FOR SLOWER GROWTH TABLE OF CONTENTS EXECUTIVE SUMMARY ............................................................................. 2 SELECTIVE BREEDING FOR FAST AND EXCESSIVE GROWTH ......................... 3 Welfare Costs ................................................................................. 5 Labored Movement ................................................................... 6 Chronic Hunger for Breeding Birds ................................................. 8 Compromised Physiological Function .............................................. 9 INTERACTION BETWEEN GROWTH AND LIVING CONDITIONS ...................... 10 Human Health Concerns ................................................................. 11 Antibiotic Resistance................................................................. 11 Diseases ............................................................................... 13 MOVING TO SLOWER GROWTH ............................................................... 14 REFERENCES ....................................................................................... 16 COVER PHOTO: CHRISTINE MORRISSEY EXECUTIVE SUMMARY In an age when the horrors of factory farming are becoming more well-known and people are increasingly interested in where their food comes from, few might be surprised that factory farmed chickens raised for their meat—sometimes called “broiler” -
Definition of Terms
DEFINITION OF TERMS Definition of Terms used for Purposes of the Montana Certification Program taken from the Terminology of the Association of Official Seed Certifying Agencies. A. Variety The term variety (cultivar) denotes an assemblage of cultivated individuals which are distinguished by any characters (morphological, physiological, cytological, chemical or others) significant for the purposes of agriculture, forestry, or horticulture and which, when reproduced (sexually or asexually) or reconstituted, retain their distinguishing features. B. Classes of Seed Recognized in Seed Certification 1. Breeder - Breeder seed is seed directly controlled by the originating or sponsoring plant breeding institution, or person, or designee thereof. As applied to certified seed, breeders seed is the source for the production of seed of the other classes of certified seed. 2. Foundation Foundation seed is seed which is the progeny of breeder or Foundation seed produced under control of the originator or sponsoring plant breeding institution, or person, or designee thereof. As applied to certified seed, Foundation seed is a class of certified seed which is produced under procedures established by the certifying agency for the purpose of maintaining genetic purity and identity. 3. Registered Registered seed shall be the progeny of Breeder or Foundation seed handled under procedures acceptable to the certifying agency to maintain satisfactory genetic purity and identity. 4. Certified Certified seed shall be the progeny of Breeder, Foundation, or Registered seed so handled as to maintain satisfactory genetic purity and identity, and which has been acceptable to the certifying agency. Certified tree seed is defined as seed from trees produced so as to assure genetic identity. -
Hybrid Non-Hybrid Open Pollinated - Heirloom Planted Side by Side, Ensuring That Every Seed to Commercially-Produced, Hybrid Varieties
J&L’s Gardening Handouts Tips and Suggestions for Year Round Gardening www.JLGardenCenter.com [email protected] 2018 Hybrid Non-Hybrid Open Pollinated - Heirloom planted side by side, ensuring that every seed to commercially-produced, hybrid varieties. Definitions will receive pollen from one variety (father) Heirloom tomatoes have a long record of Heirloom (non-hybrid) - they are not a special and grown on a distinctively different variety producing healthy tomatoes without many disease species of plants. They are ‘open-pollinated’ (mother). Each seed is genetically identical. problems; but commercial growers disagree. Many varieties that have been grown for at least 50 The plant is different than both parents, and has tomato diseases cannot be chemically controlled; years. They are non-hybrid varieties, and the distinctive characteristics from one or both of the the plant’s genetics have to withstand them. seeds can be collected and re-planted. Many parents. Hand pollination, isolation, or physical Many heirloom tomatoes have unique shapes heirloom varieties are not used in modern ‘large- barriers are often used in the pollination process. and have a variety of colors, including purple, scale’ agriculture, but they are used extensively F1 hybrids usually have better qualities, better yellow, white, orange, pink, red, green, black, in home gardens. flavor, higher yields, or in some way have better and striped. Open pollinated (non-hybrid) - Pollination traits than their traditional, open pollinated parent However, some gardeners don’t want unusual, occurs by insects, birds, wind, or other natural varieties. You cannot save and replant seeds from misshapen, or inconsistent tomatoes. They simply mechanisms. -
Puppy Guarantee
Bullies 4 The Brave, Inc. PUPPY GUARANTEE I ________________________________________________ have read the below information (First Name/Last Name) regarding the puppy guarantee and agree to all within,____________________. (Date) Please copy, print and sign that you have read and understand the below Health Guarantee. It must be mailed or emailed to us before your puppy leaves. REGULAR MONTHLY VET CHECKS WILL ALLOW THIS GUARANTEE TO BE DOCUMENTED BY YOUR VET- YOU MUST HAVE A PAPER TRAIL FOR YOUR PUPPY'S HEALTH GUARANTEE INCLUDING VET WORMING & SHOT RECORDS. WEIGHT AND HEIGHT OF YOUR PUPPY MUST BE DOCUMENTED AS WELL AS VETS COMMENTS FOR HIS/HER OVERALL HEALTH. YOU MUST KEEP AND FURNISH REGULAR MONTHLY VET VISIT RECORDS AND FOOD RECEIPTS FOR THE FIRST YEAR OF LIFE. IF YOU HAVE NOT DONE THIS THE HEALTH GUARANTEE IS NULL AND VOID, WE WILL NOT COVER YOUR PET BECAUSE IT IS THAT IMPORTANT FOR A HEALTHY PUPPY THAT THESE THINGS BE DONE. WE ALSO HAVE THE RIGHT TO CALL YOUR VET AND VERIFY INFORMATION ABOUT YOUR PUPPY IF THERE IS A PROBLEM THAT ARISES. Health Guarantee The Olde English Bulldogge is quickly becoming well respected in many working venues such as weight pull, therapy training, obedience and several others. They have become excellent breathers and do not have to be kept in an air conditioned environments on most days; as with any breed heat stroke can happen if proper care is not taken with your pet. The Olde English Bulldogge may be a healthier breed of dog than many modern Bulldog breeds; HOWEVER, the Bulldogge has been recreated using its counterpart the English bulldog and certain genes can pull from generations long ago so it is important to read and understand about these types of bulldog defects. -
As a Responsible Dog Breeder
• How often is someone at home? • Will they have time to walk and play with the dog? As A Responsible If feasible, it’s not unreasonable for a breeder to make a house call after the puppy has had time to settle Dog Breeder in with its new family. Some breeders require dog buyers to sign contracts indicating specific conditions of care. Important qualities to look for in potential puppy owners are interest and inquisitiveness about you and FOR MORE the dogs you breed. A person or family truly committed to responsible dog ownership will want to learn about the INFORMATION CONTACT: breed and how to care for it. THE AMERICAN KENNEL CLUB A RESPONSIBLE BREEDER IS RESPONSIBLE ◆ FOR LIFE. Now comes the best part of being a breeder. 8051 Arco Corporate Drive, Suite 100 (No, it’s not putting away the newspaper liners and Raleigh, NC 27617-3390 ◆ puppy food.) It’s having those great families you selected call you with news of puppy’s first tooth, first Customer Service: (919) 233-9767 veterinarian visit, first dog event, first win at an AKC event! It’s getting letters. It’s getting holiday cards. It’s THE AKC IS ON THE INTERNET! getting family portraits with your puppy (yes, it’ll Our World Wide Web home page address is: always be yours) smack in the middle. What’s not to www.akc.org love about being a breeder at these times? But now can come the worst part too. It’s the nice Our e-mail address is: young couple who is divorcing and neither person can [email protected] keep the dog. -
Catahoula Bulldog OR NOT Catahoula Bulldog, That Is the Question -- By: Kacy Hatten
Catahoula Bulldog OR NOT Catahoula Bulldog, That Is The Question -- By: Kacy Hatten CB Or Not CB, That Is The Question A guide for selecting, breeding, and evaluating the authenticity of Catahoula Bulldogs and their breeders. Beautiful dogs are often destined to fall into the hands of uneducated, inexperienced, or less-than-desirable humans. With the world of cyberspace providing a medium in which lesser known or more rare dogs are becoming more uncovered and advertised, it is now easy for anyone on a Google search to find a unique and attractive canine. In addition, people have a medium to advertise and market the breeding and selling of once rare breed dogs, increasing the population. This, among other things, has increased the popularity and awareness of the catahoula bulldog. Unfortunately with this increased popularity comes increased cases of mistaken identity, and of decreased quality. This is written as a guide to increase the knowledge and awareness of breeders, owners, and prospective enthusiasts of the real catahoula bulldog as well as a few guidelines for choosing a breeder or dog no matter the breed. ------------------------------------ What Is A Catahoula Bulldog A catahoula bulldog is a recognized hybrid between the American bulldog and Louisiana catahoula leopard dog. The cross began with hunting and working dogs down south, for a specific purpose. They were not bred to improve either breed, but rather, to gain certain characteristics that you may not get by leaving the two separate. The first thing you should be aware of is an authentic catahoula bulldog is only a hybrid in which an American bulldog is used, no other bulldog breed or type crossed with a catahoula is a true catahoula bulldog. -
Oreochromis Niloticus and O. Mossambicus F1
SalinitySalinity ToleranceTolerance ofof OreochromisOreochromis niloticusniloticus andand O.O. mossambicusmossambicus F1F1 HybridsHybrids andand TheirTheir SuccessiveSuccessive BackcrossBackcross Dennis A. Mateo, Riza O. Aguilar, Wilfredo Campos, Ma. Severa Fe Katalbas, Roman Sanares, Bernard Chevassus, Jerome Lazard, Pierre Morissens, Jean Francois Baroiller and Xavier Rognon Significance of the Study • Freshwater now becoming a scarce resource, with competing use for: • Domestic or household, agriculture and power generation. • Future prospect in aquaculture: • Expansion to saline waters, unfit for domestic/household and agricultural uses. • Fish cage culture in saline waters. • Alternative species for brackishwater pond culture. • Tilapias are popular cultured species due to their high environmental tolerances. • Tilapias posses various characteristics which make them desirable species for brackishwater farming. • Consequently, for many years, tropical aquaculturists have tried to develop saline tilapia culture. • Unfortunately, the true brackishwater tilapias (e.g. O. mossambicus) have poor- growing performance while the fast- growing strains (e.g. O. niloticus) are poorly adapted to saline water environment. • The usual practice of using F1 hybrids of the foregoing species failed. Why F1 hybrids failed? • Difficult to maintain two pure species; small production due to incompatibility of breeders; and unsustainable mass production. • With the foregoing reasons, there is a need to produce tilapia strains that can be bred in brackishwater. -
Century Botanical Networks1
Easterby-Smith, Reputation in a box April 2014 Reputation in a box. Objects, communication and trust in late eighteenth- 1 century botanical networks Sarah Easterby-Smith, University of St Andrews [email protected] Author final version. This article was published in History of Science 53(2) (June 2015), pp. 180-208. Please cite from the published version: DOI: http://hos.sagepub.com/content/53/2/180 Some time in 1782 or 1783, Philippe-Victoire Lévêque de Vilmorin (1715-1804), a French nurseryman and botanist, sent a box of kitchen-garden seeds to America. The tinplate box, with a tightly fitting lid to keep out the noxious sea air as well as insects, heat, and water, was despatched to one of Vilmorin’s correspondents, a Philadelphian plant hunter called William Young (or Yong) (1742-1785).2 This parcel of seeds is 1 I wish to express my thanks to Maxine Berg, Jorge Flores, Katherine Foxhall, Oliver Fulton, Colin Jones, Neil Safier, Penny Summerfield, Koji Yamamoto and the editor and anonymous reviewers of History of Science – who all kindly read and gave helpful feedback on earlier versions of this paper. Research was supported by a Max Weber Fellowship at the European University Institute, and a Dibner Fellowship in the History of Science at the Huntington Library. 2 For more on Philippe-Victoire Lévêque de Vilmorin, see: Augustin-François de Silvestre, “Notice Bibliographique sur P.-V.-L. de Vilmorin,” Séance publique de la Société d’Agriculture (Paris: Société d’Agriculture, 26 Brumaire an XIV [17 November 1805]); Gustav Heuzé, Les Vilmorin (1746-1899) (Paris: Libraire Agricole de la Maison Rustique, 1899). -
Chap – 6 : Hybridization
Dr. Md. Ariful Alam Associate Professor Department of Fisheries Biology and Genetics Chap – 6 : Hybridization Hybridization: The act of mixing different species or varieties of animals or plants and thus to produce hybrids is called hybridization. Hybridization is considered as inter-specific between two breeds, strains, species or even genus. Hybridization uses the dominant genetic variance (VD). The phenotype obtained through hybridization is not heritable, i.e. the result of hybridization is unpredictable. It is produced anew in each generation. Two superior parents may not necessarily produce superior offspring. Uses of Hybridization: 1. It can be used as a quick and dirty method before selection will be employed. 2. It can be used to improve productivity whether h2 is large or small. When h2 is small, hybridization is the only practical way to improve productivity. 3. Hybridization can be incorporated into a selection program as a final step to produce animals for grow-out. 4. Production of new breeds or strains. 5. Production of uniform products. 6. Production of monosex populations. 7. Production of sterile individuals. 8. It can be used to improve a wild fishery. Types of cross-breeding program: 1. Two-breed crossing: A X B AB F1 hybrids (for growth) 2. Top-crossing: An inbred line is mated to a non-inbred line or strain. 3. Back-crossing: F1 hybrid is mated back to one of its parents or parental lines. A X B AB F1 hybrids (for growth) X A AB-A back cross hybrid (75% A + 25% B) Following points are considered for hybridization: Hatching rate Survival rate at 1 year Female fertility Male fertility Dr.