Journal of Horticultural Sciences

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.

Full Text

   

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.

Full Text

   

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.

Full Text