Journal of Horticultural Sciences

S. Lal ¹, D. Kumar ¹, D. B. Singh ¹, N. Ahmed ¹, R. Kumar ¹, G. A. Dar ¹

Affiliations
1 Central Institute of Temperate Horticulture, Old Air Field, PO: Rangreth-190007, IN

Abstract

Pre-harvest application of calcium chloride (0.5, 1.0, and 1.5 %) and gibberellic acid(10, 20 and 30 ppm) at 80% blooming, fruit-set and at 15 days before harvest were carried out on 5-year old trees of apricot cv. Harcot. All the treatments significantly reduced physiological loss in fruit weight, fruit diameter and spoilage percentage during storage. However, CaCl₂ @ 1.5% was found to be most effective in minimizing weight loss in fruits during storage compared to Control. Fruits quality (TSS, titrable acidity, TSS/TA, ascorbic acid, total sugar, etc.) was also found to be better (even at 8 days of storage at ambient condition with this treatment) compared to Control. Hence, it can be concluded that pre-harvest foliar application in apricot cv. Harcot with CaCl₂ @ 1.5% at three stages, i.e., 80% blooming, at fruit-set and 15 days before harvest, enhances shelf-life of the fruit from 3-5 days storage to 8 days storage, and can maintain good fruit quality under ambient storage-condition for up to 8 days.

Keywords

Pre-Harvest, Harcot, Calcium Chloride, Gibberellic Acid, Ambient Condition Storage.

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Murlee Yadav ¹, Rashmi Chaudhary ¹, D. B. Singh ¹

Affiliations
1 Department of Horticulture, Allahabad Agricultural Institute - Deemed University, Allahabad – 211 007, IN

Abstract

The present investigation was conducted to determine heterosis in 6 lines and 4 tester crosses of bitter gourd, where the six lines used were MC-84 (L₁), S-17 (L₂), JMC-21 (L₃), NDBT-15(L₄), VRBT-94 (L₅) and Gy-1 (L₆) and the four testers were VRBT-6-9 (T₁), JMC-22 (T₂), VRBT-89 (T₃) and MC-56 (T₄). Most of the crosses failed to manifest significant heterosis for many of the horticultural traits but traits, like vine length and fruit length showed positive significant heterosis, while, days to first appearance of female flower manifested negative significant heterosis in several crosses. Two crosses, namely, MC-84 x VRBT-6-9 and MC-84 x JMC-22 were identified to have potential in terms of yield, whereas two more crosses viz., S-17 x VRBT-6-9 and S-17 x JMC-22 were found superior in terms of powdery mildew resistance.

Keywords

Bitter Gourd, Heterosis.

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Murlee Yadav ¹, D. B. Singh ¹, Rashmi Chaudhary ¹, Devi Singh ¹

Affiliations
1 Department of Horticulture, Allahabad Agricultural Institute-Deemed University, Allahabad, IN

Abstract

The variance analysis for 17 plant characters showed significant differences. Maximum vine length was recorded in IC-85635A. Significantly higher number of primary branches per vine and internodal length were observed in IC-85639. Maximum number of nodes was observed in JMC-4. Significantly minimum number of days for first appearance of male flower and maximum fruit length, fruit width, yield per vine, yield per plot, yield/ha were recorded in MC-84. Highest number of fruits per vine was recorded in GY-I and minimum powdery mildew infestation was observed in JMC-22.

Keywords

Genetic Variability, Germplasm, Bittergourd.

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M. M. Mir ¹, A. A. Sofi ¹, D. B. Singh ², F. N. Bhat ²

Affiliations
1 Central Institute of Temperate Horticulture, Srinagar (J&K), IN
2 Dept. of Horticulture, Allahabad Agricultural Institute - Deemed University, Allahabad, IN

Abstract

Studies were carried out to find out association between different characters and magnitude of association of different characters with gross fruit yield (kg/plant) in ten cultivars of pomegranate (Punica granatum L.) including one local check. Data revealed that genotypic correlation coefficients were higher than their corresponding phenotypic ones for most of the characters, implying an inherent relationship among them. Fruit weight, fruit diameter, fruit volume, juice content, fruit set and number of fruits/plant exhibited highly significant positive correlation. Among the characters studied, number of fruits/plant, fruit weight, fruit volume and fruit set recorded maximum positive direct effect towards gross fruit yield (kg/plant) at both the levels. This study revealed that both the number of fruits/plant and fruit weight could form a selection criterion for yield improvement in pomegranate.

Keywords

Pomegranate, Correlation, Path Analysis.

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Murlee Yadav ¹, M. S. Kushwah ¹, D. B. Singh ¹, R. K. Roshan ¹, Nongallei Pebam ¹

Affiliations
1 Department of Horticulture, Allahabad Agricultural Institute-Deemed University, Allahabad – 211 007, IN

Abstract

An experiment was laid out in a 4x2 factorial design, with 4 levels of γ-irradiation (0,5,10&15 Krad) and two dates of sowing (15th September and 15^th October) on papaya cv. Kesar King. The results indicated that germination percentage, survival percentage and plant growth increased with the increased in γ-irradiation upto 10 Krad. Early sowing of seed (15^th September) showed better germination (73%), survival (70%) and plant growth as compared to late sowing (15^th October). Interaction between γ-irradiation of 10 Krad and early sowing of seed (15^th September) was found superior to all the other treatment combinations to obtain optimum germination percentage, survival percentage and plant growth.

Keywords

γ-Irradiation, Papaya.

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