Morphophysiological basis of variation in rapeseed (Brassica napus L.) yield
2007
Miri, H.R. (Arsanjan Islamic Azad Univ., Fras (Iran). Dept. of Agronomy)
In order to determinate morphological and physiological traits associated with yield improvement in rapeseed, field experiments were conducted on 16 cultivars. The traits, grain yield, yield components, harvest index, plant height, days to flowering and from flowering to physiological maturity, photosynthetic rate (Pn) and stomatal conductance (gs) in flowering and pod formation were measured. The results indicated that harvest index, number of pods per plant, plant height, leaf Pn at flowering stage and gs at flowering and pod formation were significantly correlated with the grain yield. The length of sowing to flowering period also had significant correlation with the grain yield. In summary the results suggested that there were some yield-related traits in rapeseed that could be used in breeding programs for increasing the grain yield of rapeseed.
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