GroGrowwtthh of of PaPassissifflloorraa aallaattaa SeeSeedlidlingngs fs foor r TTraranspnspllaantnt PrProoducducttiioon n TTreareatted wed wiitth h SelSelected ected SSttiimulmulaattoors rs
JJ. . PablPabloo Mo Moraralesles PayPayaan n Departamento de Horticultura Universidad de Puerto Rico, Mayaguez WilliaWilliam m MM. . StallStall Horticultural Sciences Department University of Florida, Gainesvillele SweeSweet t PaPassssioion n fruit fruit
n PasPassiflosiflorara ala alatata n SSwweeteet pa passssioion fn fruruit it n TroTropicapical fl fruitruit, , PaPassssifloraifloraceaceaee n SaSamme e ggenusenus as as or ornanammental paental passssioionnfloflowwersers n OOrnarnammental aental and nd edible vedible vaaluelue DistrDistribibututioion n && P Pootentiatential l
n Grown and wild in many countries in the tropical regions of the Americas
n Not as widely known as Passiflora edulis andnd Passiflora quadrangularis
n Fresh fruit or juicece n The plant is a perennial vine n First harvest ~1 year n Practices to accelerate crop are welcome n Reproduced by seed or by cuttings
à n Nursery transplanting to fieldd ““Idea Ideall ”” tratranspnsplalantnts fos for mr moost st PaPassssifliflooraceaeraceae n At least four true exapanded leaves n At least one tendril n Height 2550 cm n Nursery usually takes 6080 days after emergence OObjbjecectivtivee n To determine the effect of selected stimulators on the growth of sweet passion fruit seedlings for transplants MaMaterteriaials als andnd M Methoethodsds n Sweet passion fruit grown from seed n Styrofoam cups 12.5 cm in height, 8.75 cm upper diameter (180 cm 3 ) MaMaterteriaials als andnd M Methoethodsds n Sphagnumbased growth medium n Fertilization 101010 + micronutrients twice a week n Watered daily (100 ml per plant) TrTreateatmmententss n Benzyl adenine (BA): 0, 10, 20, 30, 40 mg/L n Gibberellic acid 3 (GA): 10, 20, 30, 40 mg/L n A glycinerich mix of amino acids and short chain peptides (ACP): 1, 2, 3, 4 g/L n Acetylthioproline (AP): 0, 100, 200, 300, 400 mg/L n Triterpenic acidrich extract (TTA): 0, 100, 200, 300, 400 mg/L
Sprayed to the canopy 15 days after emergence TrTreateatmmententss n Acetylthioproline TrTreateatmmententss n Gibberellic acid 3 TrTreateatmmententss n A glycinerich mix of amino acids and shortchain peptides EvEvaaluluaatiotionn n Time to five expanded leaves & stem 25 cm n Time to five expanded leaves & stem 50 cm ReResultssults BeBennzzyyl l aadenidenine ane andnd TrTriteriterpepeninic c AcAcidid n No significant effect on sweet passion fruit transplant production. n Time to 25 cmstems was ~52 d n Time to 50 cmstems was ~76 d Effect of APC on the time to produce sweet passion fruit transplants 25 cm h
t 80 g n
e 70
m l 60
ste 50 d e
ir 40 s 30 de o Y=36.98+39.11e(x/3.91); r 2= 0.94
t 20 10 Days 0 0 1 2 3 4 APC rate (mg/L) Effect of APC on the time to produce passion fruit transplants 25 cm 50 cm
80 Y=30.5523.23e(x/3.18); r 2= 0.94 gth 70 en l
60 stem 50
red 40 si 30 de Y=36.98+39.11e(x/3.91); r 2= 0.94 o t 20
ays 10 D 0 0 1 2 3 4
APC rate (mg/L) Effect of GA on the time to produce sweet passion fruit transplants
25 cm
h 80 t g n 70 e
m l 60
ste 50 d e 40 ir 2 s Y=75.60.43x; r =0.91 30 de o
t 20 10 Days 0 0 10 20 30 40
GA rate (mg/L) Effect of GA on the time to produce passion fruit transplants 25 cm 50 cm
h 80 Y=52.80.21x; r 2= 0.98 gt 70 en l
60 em st
50 ed r 40 2
si Y=75.60.43x; r =0.91 30 de o t 20
ays 10 D 0 0 10 20 30 40
GA rate (mg/L) Effect of AP on the time to produce passion fruit transplants 25 cm 50 cm
h 80 t g n 70 e
m l 60
ste 50 d e 40 ir s 30 de o
t 20 10 Days 0 0 100 200 300 400
AP rate (mg/L) 40 d
APC 4 g/L AP 200 mg/L BA AcAcetyetylthlthioioprproolinline ve vs s GGAA n AP and GA shortened the time to produce 25 cmstems to 44 d, and the time to produce 50 cmstems to ~60 d n GA treatment resulted in desired stem length more rapidly than AP treatment n Plants with AP treatment reached the 5leaf stage more rapidly than those with GA treatment n Meeting the leaf number and stem length requirements took the same time with AP and GA SuSummmmaaryry n Control plants reached “ideal” by 53 d (25cm) to 75 d (50cm) n BA and TTA did not affect time to “ideal” transplants n APC 34 g/L shortened time by 1522 d n GA (3040 mg/L) and AP (300400 mg/L) shortened time by 9–15 d QQuestiouestions?ns?