ISSN:
1432-2242
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Summary For screening better types among 10 strains with the help of the D 2 statistic, an experiment was conducted in randomized block design with three replications. 10 plants in each plot were randomly selected and observations were recorded on final plant height, heading duration, effective tillers, number of grains per panicle, yield per plant and 100 grain weight. The observations were analyzed and found to be significant at 1% level. In the study of distance relations the contribution of grain number per panicle to D 2 values was found to be maximum. Again, this technique also helped in grouping the 10 strains into four clusters, viz. A, B, C and D, of which B possessed six strains out of 10; A possessed two and C and D one each. Group A comprised 2 selections from the same cross. Group D was composed of a selection from a cross involving Dular and Taichung Native-1 as parents. Group B possessed Dular, two selections from a cross involving Dular as one of the parents, Dharial and N.C.-1626. The constituents of A are expected to be transgressive segregates. Group A was maximally distantly related with D followed in order by C and B. The distance between B and C was small. Group D was found to be the best of all strains studied, followed by B, C and A.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00279296
Permalink
