【摘要】 <正> 一.引言芸苔属植物(Brassica)包括多种极有经济价值的蔬菜,油类和饲料作物,种类很复杂。按照它们的染色体数目可分成n=8,9,10,17,18,19等六类。过去遗传学及细胞遗传学者对于芸苔属植物作了很多研究。作者曾为文作过总结性的述评。为明瞭起见,茲引盛永所列的各种芸苔属植物染色体数目表,以示梗概(较原表略加更多还原

【Abstract】 1.In the cross, Brassica pekinensis Rupr (n=10) × Brassica oleracea var. fimbriata Mill. (n=9), the author, employing "repeated pollination" method, obtained an interspecies hybrid plant with only 9 pairs of chromosomes. The hybrid showed high percentage of pollen abortion but no aberrant chromosome behavior in meiotic divisions. All there are contradictory to what the Mendel- Morganist would expected. 2.Besides "repeated pollination" method, the author also applied crushed stigmatic tissue of the ♂ plant and heat killed pollen of the ♂ plant to the stigma which is being pollinated, with the hope that these treatments might in some way aid the pollination process, and consequently facililate the cross. No positive results, however, were obtained. 3.The hybrid plant showed rather vigaurous growth. The possibility that the hybrid can be cultivated into a new variety of higher economical value is pointed out.更多还原