Line x Tester Analysis for Yield and Fiber Quality in Cotton (Gossypium hirsutum L.)

Year 2019, Volume: 24 Issue: 2, 215 - 220, 15.12.2019

Aydın Ünay , Nedim Özbek Volkan Mehmet Çınar

https://doi.org/10.17557/tjfc.509134

Cited By: 3

Abstract

This experiment
was conducted in order to estimate gene action, combining ability and heterotic
effects for yield and quality characters by the line x tester analysis,
involving 5 lines and 4 testers with 20 crosses in cotton (Gossypium hirsutum L.). The ratio of general and specific ability
variance revealed non-additive gene action effects for seed cotton yield, fiber
length, fiber strength and ginning percentage and additive gene action for
fiber fineness and reflectance degree. Claudia, Gloria and Bali 308 with high
general combining ability were combiner parents and could be used for breeding
multi-parent combinations. ST-468 x Claudia, Carisma
x Carmen, Bali 308 x Gloria and Bali 308 x Claudia were promising combinations
for further selection. Heterosis and heterobeltiosis values of most cross
combinations for seed cotton yield, fiber strength and ginning percentage were
negative direct. It was concluded that due to non-additive gene actions, it is
advisable to select individual plants for seed cotton yield, ginning percentage
and fiber properties in later generations (F₄-F₆).

Keywords

Combining ability, Cotton, Fiber quality, Gene action, Heterosis

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