科研之友
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摘要
Ninety seven sunflower accessions/lines were analyzed for developing heterotic groups through agromorphological and total seed storage proteins through SDS-PAGE. Data for nine morphological parameters were recorded from the field and were used for constructing the dendrogram using UPGMA for an insight of the level of genetic distance among the studied material and its genetic potential for seed yield and its related traits. Correlation coefficient estimates showed that seed yield per plant had a positive association with 100 seed weight, head diameter, number of leaves per plant, leaf area, plant height and stem curvature while a negative association with flowering time. Likewise, seed storage proteins were also used to assess the genetic diversity among the sunflower material as proteins are a reliable source of studying the genetic distance among the plants because they are least affected by the environmental factors. Results showed the appearance of 25 protein bands out of which 16 were polymorphic and rest monomorphic. Data of polymorphic bands were used to draw dendrogram to distribute the material into various groups. Both the dendrograms were then compared, and it was found that male and female lines were divided into different clusters with few exceptions. After comparing the dendrogram and morphological data for seed yield and its related attributes six female and six male lines were recommended so that unnecessary crosses could be avoided thus saving the time and cost of developing and finding a suitable commercially viable sunflower hybrid.
- 出版日期2018
