Exploration of wild grass Imperata cylindrica for development of doubled haploids in winter x spring wheat (Triticum aestivum L.) hybrids accompanied with combining ability and hybrid potential estimation
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Authors
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Madhu Patial
ICAR-Indian Agricultural Research Institute, Regional Station, Shimla, Himachal Pradesh 171 004
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Dharam Pal
ICAR-Indian Agricultural Research Institute, Regional Station, Shimla, Himachal Pradesh 171 004
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H. K. Chaudhary
CSK Himachal Pradesh Krishi Vishvavidyalya, Palampur, Himachal Pradesh 176 062
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Jagdish Kumar
ICAR-Indian Agricultural Research Institute, Regional Station, Shimla, Himachal Pradesh 171 004
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K. V. Prabhu
ICAR-Indian Agricultural Research Institute, New Delhi 110 012
Abstract
Two spring and three winter wheat genotypes were crossed
in Line x Tester manner forming six F1’s and three spring
and one winter wheat genotypes were also crossed forming
two three way F1’s. Combining ability studies indicated
sufficient genetic variability in the breeding material. Among
lines, HS542 showed good general combining ability for
seed yield/plant and among testers KLE/BER/2*FL-8/
DONSK-POLL was good combiner for 1000 seed weight.
The cross HS542/Zander33 and HD2997/KLE/BER/2*FL-8/
DONSK-POLL showed significant specific combining ability
effects for 1000 grain weight. Intergeneric hybridization
lead to the haploid embryo development from the crosses:
HS542/China 84-40022, HS542/ KLE/BER/2*FL-8/DONSKPOLL, HS526/ID 80994W/VEE/3/CHEN/3AL X FLW13 and
HD2997/ KLE/BER/2*FL-8/DONSK-POLL. These crosses also
showed maximum values of heterosis for 1000 seed weight
or spikelet per spike or seed yield/plant.