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Genetic gains of crops could be improved by pyramiding physiological, agronomic and stress tolerant traits in single genotypes.
Comprehensive foreground and background phenotypic information is a prerequisite for any molecular and strategic breeding
program. A population of 465 local spring wheat (Triticum aestivum L.) genotypes was characterized using various agromorphological and yield traits for two cropping seasons. Average values ranged from 92%-112%, 80%-240%, 48%-57% and
34%-42% for plant height, harvest index, grain per spike and 1000 grain weight, respectively. In both years, there was a strong
correlation of yield per plant with plant height, harvest index, 1000 grain weight and grain per spike. Factor1 and factor2 of
principal component analysis (PCA) explained the maximum variability ranges from 21%-19% for the first year and 19%-16%
for the second year. Plant height and yield per plant showed a significantly positive correlation with genotypes during both
cropping seasons. Cluster analysis divided genotypes into three distinct groups indicating the existence of considerable
variation. The extent of variation and correlation among genotypes is required for effective utilization and conservation of the
genetic resource. Based on PCA, genotypes with highest score and desirable characters can be selected for further breeding
programs
Madiha Habib, Faisal Saeed Awan, Bushra Sadia, Muhammad Anjum Zia. (2020) GENETIC DISSECTION OF YIELD ENHANCING TRAITS IN PAKISTANI SPRING WHEAT GENOTYPES, Pakistan Journal of Agricultural Sciences, Volume 57, Issue 5.
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