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3.J349和MA两品种之间正反交的杂种子1代对盐分的反应。水稻品种MA(Magnolia),IR8,BB(Bluebonnet)和J349(Jhona349)等4个品种中,由于盐分引起的不育,已在第一篇报导中被分为簇丛型,迟延型和随机型等3类不育性(见本刊1937,9期译文)。生长在盐化条件下,这些品种的结实率跟这3类不育性的出现频率有着密切的关系。迟延型全穗不育性仅出现在生长于4,000和5,000ppm盐分水平的MA品种中,在同样盐分水平条件下,其他三个品种未出现这种不育类型。因此推测迟延型全穗不育性,可能是受
3. J349 and MA two varieties of reciprocal cross between the hybrid seed 1 generation of salt response. Among the four cultivars MA (Magnolia, IR8, BB (J) and J349 (Jhona349), the salt-induced infertility has been divided into cluster type, delayed type and random type in the first report And other three kinds of infertility (see 1937, 9 period translation). Growing under salinization conditions, the seed setting rate of these varieties is closely related to the frequency of these three types of infertility. Delayed panicle fertility was only found in MA varieties grown at 4,000 and 5,000 ppm salinity levels and did not show this type of infertility at the same salt level in the other three varieties. Therefore speculated that delayed type whole-panicle fertility may be affected