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Authors: AYESHA
Other: D, SATISH
H. P, H. P
Title: HETEROSIS AND COMBINING ABILITY STUDIES IN OKRA (Abelmoschus esculentus (L.) Moench)
Language: en_US
Type: Thesis
Pages: 149
Agrotags: null
Keywords: OKRA (Abelmoschus esculentus (L.) Moench)
Abstract: The present investigation was carried out with three objectives at experimental block of vegetable crops in Haveli farm, Bagalkot, during kharif and rabi season in the year 2016-17. The present study was undertaken to elicit information on the nature of combining ability variance, effects, gene action and heterosis through diallel analysis including reciprocals. The analysis of variance revealed presence of good variation for all the character studied among parents as well as in hybrids. Comprehensive assessment of parents by considering gca effects has resulted into identification of parents, viz., MHO- 12, MHO- 16, MHO- 27 and KRCO-1 as good combiners for yield and yield contributing characters. The crosses viz., MHO- 22× MHO- 27, MHO- 22× KRCO-1 and MHO- 22× KRCO-8 were good specific combiners for yield and yield related traits which can be used in future breeding programme. Combining ability analysis revealed that sca effects are higher than gca effects for most of the traits indicating the presence of both additive and non additive gene effects for inheritance of the traits. Hence, direct selection for higher values of yield per plant can be practiced. Comprehensive assessment of crosses by considering heterosis values revealed that, out of thirty crosses, three were average heterotic (MHO- 22× MHO- 27, MHO- 22× KRCO-1 and MHO- 22× KRCO-8) and three were low heterotic (MHO- 12×KRCO-1, MHO-22×MHO-16 and MHO-12×KRCO-8). The dominance effects (H1 and H2) were higher than the additive effect (D), which showed the preponderance of non-additive gene action plays a greater role in the inheritance for the characters in this study for plant height at 90 DAS, internodal length at 45 and 90 DAS, number of branches at 45 and 90 DAS, number of leaves at 45 DAS, fibre. The degree of dominance (H1/D)1/2 was more than unity for all traits except for number of leaves at 45 and 90 DAS, average fruit weight, fruit length, fruit diameter which indicates all these characters were had over dominance.
Subject: Vegetable Science
Theme: HETEROSIS AND COMBINING ABILITY STUDIES IN OKRA (Abelmoschus esculentus (L.) Moench)
Research Problem: Theses
These Type: M.Sc
Issue Date: 2017-06
Appears in Collections:Theses

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