Evaluation of Mango (Mangifera Indical.) Cultivars for Flowering

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Evaluation of Mango (Mangifera Indical.) Cultivars for Flowering International Journal of Bio-resource and Stress Management 2017, 8(4):505-509 Full Research Doi: HTTPS://DOI.ORG/10.23910/IJBSM/2017.8.4.1811a Evaluation of Mango (Mangifera indica L.) Cultivars for Flowering, Fruiting and Yield Attributes T. S. Hada*and A. K. Singh Dept. of Horticulture, Institute of Agricultural Sciences, Banaras Hindu University Varanasi, Uttar Pradesh (221 005), India Corresponding Author Article History T. S. Hada Article ID: AR1811a e-mail: [email protected] Received in 3rd May, 2017 Received in revised form 29th June, 2017 Accepted in final form 4th August, 2017 Abstract A field experiment was conducted to investigate the flowering, fruiting and yield attributes of some mango cultivars for the years 2014−15 and 2015−16. Outcome of the present research work revealed that the date of panicle emergence in different mango cultivars varied in both the years. It was observed that the panicle emergence was earliest in Gulabkhas and late in Fazli in both the years. Chausa produced maximum panicle length (35.19 cm) and breadth (24.76 cm). In the year 2014−15, earliest flowering was noted in Gulabkhas (Feb 17−Feb 26) and in the year 2015−16, earliest flowering was observed in Bombai (Feb 20−Feb 28) while, flowering was very late in Sepiya for both the years. Maximum number of flowers was observed in Langra (1839.13) while, minimum number of flowers was recorded in Amrapali (954.75). The duration of flowering varied from 22.50−36.00 days in different mango cultivars. Maximum value in terms of days was observed with Sepiya (39 days) while it was minimum (22.50 days) in case of Alphonso. The data revealed that date of fruit set ranged from 11th−8th April. Earliest fruit setting was observed in Bombai (12th−16th March) during the year 2014−15 while, earliest fruit setting was noted in Gulabkhas (10th March−16th March) during the year 2015−16. Highest number of fruit set panicle-1 was recorded in Langra (137.75) while, maximum fruit set per cent was noted in Bombai (41.07%). Minimum days for maturity was taken by Gulabkhas (90.17 days). Maximum yield (501.00 kg tree-1) was recorded in Langra. Keywords: Mango, cultivars, panicle, flowering, fruit set, yield 1. Introduction flower bud development in subtropical condition restricts the production of new leaves and consequently increases the Mango (Mangifera indica L.) is an important fruit crop of proportion of flower inductive leaves (mature leaves). There is India belonging to the family Anacardiaceae. Mango is a possibility that floral induction in mango can also occur after tropical fruit tree which usually flowers in spring and produces a period of plant water stress in favourable temperature, attractive fruits. Mango inflorescence is a branched terminal when canopies consist mainly of mature, inductive leaves. panicle, up to 0.6 m long and has several hundred to several The skin is smooth, thick and commonly yellow or greenish thousand flowers. Mango inflorescence is a flowering shoot when mature. Mango fruit develop rapidly after fruit set and called panicle and it bears two types of flowers, male and is ready for harvesting within 13−20 weeks, depending upon hermaphrodite flowers. Sex ratio is a variable component the variety and climate. Mango is essentially a tropical fruit. within panicles, tree and among cultivars. The initial fruit set It generally does well within temperature range of 24−27 is directly related to the proportion of perfect flowers (Singh °C but also can tolerate temperature as high as 48 °C. The et al., 2015). requirements of water depend on the type of soil and climate, A tree can have 200−3000 panicles with a potential to produce planting distance, cultivar, age of plants, developmental tremendous number of flowers (Barui and Ghosh, 2002). Cool stages, NPK applications and weather conditions (Malik and temperature regulates the flowering in mango. However, Mitra, 2001; Reddy et al., 2001; Gawankar et al., 2010; Dhake in the absence of cool temperature, induction of flowering et al., 2011). Productivity of mango is low due to several occur in response to water stress. Different degree of water factors such as alternate bearing, fruit drop, diseases and stress during flower bud development is advantageous for pests. Most of the north Indian varieties, viz., Dashehari, good flowering (Singh and Singh, 2003). Furthermore, it has Langra, Chausa and Bombay Green are alternate bearer, while, been demonstrated that the floral stimulus originates from most of the South Indian varieties bear regularly (Pandey mature leaves in mango and young leaves inhibit the floral and Dinesh, 2010). Low productivity is the resultant effect of bud initiation (Kulkarni, 1986. Hence Water stress during alternate bearing, inadequate fruit set followed by heavy fruit © 2017 PP House 505 Hada and Singh, 2017 drop. In mango, flowering is influenced by weather conditions 83°00'00'' E longitude at an elevation of 76.80 m MSL. The and varietal genotypes and is the most important trait as it mean annual rainfall is about 850−1100 mm. The experiment finally influences the yield. was carried out on healthy and bearing of 20 years old trees. Mango belongs to the group of plants, in which an antagonism The number of treatments were eleven and replicated thrice. between vegetative vigour and flowering intensity is observed. Therefore, altogether thirty-three plants were selected for Therefore, any factor that reduces the vegetative vigour, this investigation. Amrapali, Langra, Dashehari, Mallika, without altering the metabolic activity, favours flowering. Chausa, Fazli, Bombai, Himsagar, Sepiya, Alphonso and Mango trees are generally induced to flower between october Gulabkhas cultivars were taken for study as treatments.The to december in northern hemisphere and during June to experiment was laid out in Randomized Block Design (RBD). August in southern hemisphere. However, irregularity of The observations were recorded on flowering characteristics flowering in mango, which varies in time and intensity of as date of panicle emergence, panicle length (cm), panicle flowering from year to year to almost complete biennial breadth (cm), date of flowering, number of flowers panicle-1 (alternate flowering habit), is not an uncommon phenomenon. and duration of flowering. Fruiting characteristics and yield Accordingly, the unravelling of the nature of flower triggering attributes were also recorded as date of fruit set, number of and signalling elements is of utmost importance (Narvariya fruit set panicle-1, fruit set per cent, fruit maturity (days) and -1 et al., 2015). yield (kg tree ). Even in the same region, different environmental conditions 3. Results and Discussion at different years can affect maturity and quality of the fruit (Devilliers, 1998). Therefore, evaluation of different promising 3.1. Panicle emergence and size mango cultivars for a given set of ecology is one of the pre- 3.1.1 Date of panicle emergence requisite for successful mango cultivation. It was found from the data presented in Table 1 that date of panicle emergence in different mango cultivars varied in 2. Materials and Methods both the years. It was observed that the panicle emergence The present field experiment was conducted at Horticulture was earlier in Gulabkhas and late in Fazli in both the years. Unit, Department of Horticulture, Institute of Agricultural The variation in flowering behavior may be attributed to Sciences, Banaras Hindu University, Varanasi, U.P., India the genetic variation responding to the climatic conditions. during the year 2014−15 and 2015−16. The experimental Panicles initiation in all the cultivars started from the south orchard comes under the Indo-gangetic alluvial track in side of the plant. This seems to be due to more exposure of eastern Uttar Pradesh in class II of land capability class and south side of the plant to sunlight hence becoming warmer irrigated by tube well. Varanasi is situated in eastern part of than all other directions. This warmness might be the cause of Utter Pradesh, which lies between 25°19'59'' N latitude and earliest panicle initiation at the South side in various cultivars. Table 1: Data regarding date of panicle emergence and size of panicles of different mango cultivars Treatment Date of panicle emergence Length of panicle (cm) Breadth of panicle (cm) (Cultivars) 2014−15 2015−16 2014−15 2015−16 Pooled 2014−15 2015−16 Pooled mean mean Amrapali Feb13−Feb 18 Feb 10−Feb 16 24.15 25.24 24.70 15.37 14.99 15.18 Langra Feb 18−Feb 23 Feb 20−Feb 24 30.34 29.38 29.86 21.23 19.17 20.20 Dashehari Feb 12−Feb 16 Feb 11−Feb 18 24.94 26.66 25.80 16.06 15.79 15.92 Mallika Feb 8−Feb 15 Feb 10−Feb 17 25.13 26.01 25.57 15.06 15.21 15.14 Chausa Feb 27−March 3 Feb 24−March 3 35.60 34.78 35.19 23.29 26.23 24.76 Fazli Feb 28−March 7 Feb 27−March 4 29.89 28.25 29.07 15.05 15.57 15.31 Bombai Feb 2−Feb 7 Feb 4−Feb 8 27.03 28.54 27.79 15.79 15.37 15.58 Himsagar Feb 13−Feb 17 Feb 11−Feb 19 27.48 28.97 28.22 16.26 15.85 16.06 Sepiya Feb 28−March 5 Feb 26−March 2 30.95 32.99 31.97 15.07 14.40 14.74 Alphonso Feb 14−Feb 17 Feb 16−Feb 20 25.93 27.91 26.92 23.25 22.28 22.77 Gulabkhas Feb 1−Feb 5 Feb 3−Feb 8 25.77 28.31 27.04 16.42 15.59 16.00 SEm± 1.80 1.62 19.67 0.66 0.36 0.38 CD (p=0.05) 5.31 4.79 4.95 1.96 1.07 1.12 © 2017 PP House 506 International Journal of Bio-resource and Stress Management 2017, 8(4):505-509 The results corroborated with the findings by Kanpure et al.
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