تلخیص
The appropriate information on the biochemical characteristics of the plant is important for
its usefulness in human health. The genetic basis for different brassica genotypes in terms
of biochemical characteristics is important for the planning of effective breeding strategies.
The present research was conducted to determine heritability, genetic advance and
coefficient of correlation for biochemical traits in rapeseed. Breeding material comprising
10 parental lines and their 21 F3 populations was evaluated in the 2013-2014 at The
University of Agriculture of Peshawar-Pakistan in a randomized complete block design
with three replicates. For all studied traits, substantial differences were found among
genotypes, parents, and F3 populations. Similarly, significant differences for all the studied
traits with the exception of protein and glucosinolates have been recorded for parent vs. F3
populations. In most F3 populations, the heritability estimates associated with the maximum
genetic advance for oil content, protein content, linolenic acid, erucic acid, and oleic acid
were low or moderate. In comparison, moderate to high heritability coupled with maximum
genetic advance, have been observed for glucosinolates for most F3 cross combinations.
These findings show that selection in the early generation may be helpful in improving
these characters. Oil content showed a negative and highly significant correlation with
glucosinolate (rp=-0.50) and linolenic acid (rp=-0.57), so priority should be given to these
traits to improve oil content. CA2 x DH5, DH7, and CA2 x DH7 performed better for oil
content, protein content, and oleic acid, respectively, while DH2, DH5, and CA2 x DH8
showed better results for glucosinolates, linolenic acid, and erucic acid, respectively. These
genotypes could be further utilized in rapeseed breeding programs.
Nazir Ahmad, Raziuddin, Fazli Ahad, Touheed Iqbal, Nabeel Khan, Muhammad Nauman, Fazli Hameed. (2020) Genetic analysis of biochemical traits in F3 populations of rapeseed (Brassica napus L.), Asian Journal of Agriculture and Biology, Volume 8, Issue-4.
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