4. Correlation dependences between the structural elements of the yield in introduced accessions of durum wheat

Author: Zaprianka Popova, Nevenka Ganusheva,Marina Marcheva, Ganka Ganeva

DOI: n/a


The correlations between the yield and the elements which dete rmine it in 10 accessions of durum wheat have been studied. A positive correlation has been established between the plant height and the last internode’s length (r=0.72) which, in most of the investigate accessions, takes around 40% of the plant height. It ensures a high possibility for breeding genotypes resistant to lodging.
The number of seeds per spike and the number of spikelets per spike are in a high positive correlation with the weight of the seeds on the main spike (г=0.86; г=0.83). It is possible to use those traits as a reliable criterion in the selection of productive accessions.
A positive correlation was found between the productive tillering and the weight of the seeds on the main spike and the weight of the seeds per plant. A positive but poorly expressed dependence was established between the seed weight of the main spike and of the other tillers (г=0.50), the length and weight of seeds per spike (г=0.36) and a negative correlation – between the 1000-kernel weight and the weight of the seeds per plant (г=-0.51).