Correlations among the yield and yield components at segregating populations derived from selection based on harvest index in bread wheat
Makaleler > Tam Makale · 1999
Yazarlar: Necdet BUDAK, Metin B. Yildirim
CEREAL RESEARCH COMMUNICATIONS, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Scopus, 1999, cilt 27, ss 267-272
DOI: 10.1007/bf03543535
Özet
Fifteen populations were generated from a 6x6 diallel cross without reciprocal and the selection was applied based on harvest index in the F2 generation. The F2, F3, F4, F5 and F6 generations of the cross population were grown in a randomized complete block design with three replications at Bornova of Izmir province in Turkey. Correlation coefficients were estimated among the grain yield (g), plant height (cm), spike length (cm), 1000 kernel weight (g), biomass (g), harvest index (%), flag leaf width (cm), flag leaf length (cm) and number of spikes per square meter in almost all generations. It was found that there were significant positive correlations between the grain yield and the biomass production in all generations. The correlation between harvest index and grain yield varied at different generations. Harvest index had also significant positive correlations with thousand-kernel weight in the F2 and F3, generations. It was concluded that the grain yield could be increased with a higher level of total biomass in semidwarf genotypes and harvest index could be used for selection only if it has a high correlation and higher heritability than grain yield in further studies.