CONTRIBUTION AND ASSOCIATION OF AWNS AND FLAG-LEAF WITH YIELD AND ITS COMPONENTS IN DURUM WHEAT

Effect of flag-leaf and/or awn removal on grain yield of 100 spikes, kernel number and 1000-grain weight were investigated in eleven durum wheat/Triticum durum, Desf./ genotypes grown under irrigated conditions at Haryana Agricultural University, Hisar, India. The treatments were control, removal of...

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Bibliographic Details
Published in:Cereal research communications 1989-01, Vol.17 (3/4), p.265-271
Main Authors: CHHABRA, A.K., SETHI, S.K.
Format: Article
Language:English
Subjects:
Agriculture
Awns
Correlation coefficients
Durum wheat
Flag leaf
Flowering
Genotypes
Grains
Plants
Tillers
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Summary:Effect of flag-leaf and/or awn removal on grain yield of 100 spikes, kernel number and 1000-grain weight were investigated in eleven durum wheat/Triticum durum, Desf./ genotypes grown under irrigated conditions at Haryana Agricultural University, Hisar, India. The treatments were control, removal of flag-leaf at boot-leaf stage, removal of awns at eat emergence and after anthesis and a combination of awns and flag-leaf removal at ear emergence. Genotypes differed significatly for all the traits under study. Flag-leaf removal, awn removal at ear emergence and after anthesis, and combination of both significantly reduced grain yield of 100 spikes by 12.52, 17.31, 13.49 and 28.09%; and 1000-grain weight by 12.09, 16.85, 13.00 and 26.01% respectively. Grains per spike were least affected following all removal treatments. High, positive correlation coefficients of flag-leaf area and awn length were observed with their respective contributions /r = + 0.78** and +0.81** respectively/ towards grain yield. Nonsignificant correlation coefficients between grain yield of 100 spikes of untreated tillers with awn length /r = −0.05/ and flag-leaf area /r= 0.04/ indicated that flag-leaf and awns had more consistent advantage for grain weight than for yield i.e. these individually can not be used as an index of selection for getting higher-yielding plants from a mixture of genotypes. Removal of flag-leaf and its combination with awns affected more adversely grain yield in dwarf genotypes than taller ones.
ISSN:0133-3720
1788-9170