(T.turgidum × S.cereale × T.unlgare) × T.turgidum F_1 : 植物の稔性,種子の発芽性及びF_2植物の外部形態,稔性並に体細胞染色体

概要

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1. In the present investigation were studied the fertiiity and germination of the seeds of F_1 plants, and the external characters, fertility ,and somatic chromosomes of F_2 plants of backcrossed hybrids raised from Triticum-Secale triple F_1 hybrids pollinated with the pollen of Triticum turgiaum. 2. The number of somati_c chro,mosomes of the backcrossed F_1 plants that had shown the fertility was 30, 31 and 32. The fertility for spikelet in these backcrossed F1 plants having 2n= 30 chromosomes appears to vary from 5.0 to 11.3 percent, that to the case of 2n=31 chrom,osomes to vary from 1.3 to 31.4 percent and that in the case of 2n=32 chromosomes has shown 5.8 percent respectively (Table l). 3. The percentage of germination of F_2 seeds obtained on the backcrossed F_1 plants having .2n=30 chromosomes appears to vary from 5.6 to 43.8 percent, that in the case of 2n=31 chromosomes has shown to be 6.7 percent and that in the case of 2n=32 chromosomes 20.0 percent, viz. the seeds from F_1 having 2n=30 chromosomes showed the highest percentage in germination.
日本育種学会の論文
1952-12-30