Variagility and association of charcters in sweet potato
1998
Girma Abera (Bako Research Center (Ethiopia))
A field experiment was conducted at Bako Research Center in 1995 and 1996 cropping seasons with the objectives of (i)determing the extent of variability among the population and association of yield and yield components and (ii) examining the feasibility of multiple trait selection. Twenty five local and exotic sweet potato genotypes representing two maturity sets were considered. Analysis of variance indicated highly significant differences (p0.01) among genotypes for all traits in both maturity groups except number of roots per plant and marketable root yield of early group. This study indicated that, there was tremendous variability for most of the traits in both maturity groups. Broad sense heritability values, total root yield (76.75), fresh top part yield (70.50) and vine length (81.29) in early group, and marketable root yield (79.06) and internode length (78.26) in medium group showed heritability values ranging from moderately high to high, indicating that the genotypes contributed the larges shares of the phenotypes as compared to the environmental effects in these traits, and consequently, selection to improve these traits would be effective. The correlation study for characters indicated that there could be possibilities of multiple trait selection since there exists strong association among most of the traits. Generally, there was no definite correspondence between the heritability values of a trait among the two population, indicating the need for specific variability analysis in specific population
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Ethiopian Institute of Agricultural Research