小麦ライ麦間におけるAmphidiploid型作物の育成に関する遺伝学的及び細胞学的研究 : VIII.T_cSF_3植物の外部形態及び体細胞染色体

概要

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1. The germination of F_3 from the cross, Triticum cowrpactum ( ) x Secale cereale ( ), the external characteristics, the fertility and the somatic chromosomes of the plants ,grown therefrom were investigated. 2. The percentage of germination of seed from each F_2 plant was varied, ranging from 0 to 100 (Table 1). 3. Of the total 151 F_3 plants obtained the author was able to test only 81 for their somatic number of chromosomes, the remaining 70 having failed to offer preparations, whose number varied from 44 to 56 (Table 2). The somatic number of the F_3 plants from the F_2's with 47 and 48 chromosomes seems to show a tendency to decrease and approach to 42, whereas that of individuals from the F_2's with chromosorrie numbers of rLear by to 56 increase and approach to 56 as the generation proceeds. They are expected to become stable and constant when their number reaches 42 and 56 respectively. 4. 88 (ca. 5%) of the 151 plants proved fertile, of which 53 were exarnined as to the ,degree of fertility (Table 4).
日本育種学会の論文
1957-07-25