摘要
Three 2x clones with 2n pollen production, BPH322,BPH325 and W5295,7, were each mated with three 4x cultivars, Raritan, Superior and Trent, in an incomplete diallel cross design. Estimates of various heritability for tuber yield per plant are that h2m is 3720%,h2f 1630%,h2mf 2330%,h2B 7670% and h2N 5340%. Estimates of general combining ability(GCA) and specific combining ability(SCA) are 6960% and 3030%,respectively. The results suggest that additive effect of genes for tuber yield is obvious. The 2n pollen producing diploid hybrids have good breeding values for yield ,earliness and starch content.
Three 2x clones with 2n pollen production, BPH322,BPH325 and W5295,7, were each mated with three 4x cultivars, Raritan, Superior and Trent, in an incomplete diallel cross design. Estimates of various heritability for tuber yield per plant are that h2m is 3720%,h2f 1630%,h2mf 2330%,h2B 7670% and h2N 5340%. Estimates of general combining ability(GCA) and specific combining ability(SCA) are 6960% and 3030%,respectively. The results suggest that additive effect of genes for tuber yield is obvious. The 2n pollen producing diploid hybrids have good breeding values for yield ,earliness and starch content.
