Partial male-sterile (ms4/ms4) soybeans (Glycine max L. Merr.) and their fertile isoline (Ms4/Ms4) were grown in adjoining field plots. From 62 until 92 days after emergence, the nitrogenase activity, assayed by acetylene reduction, of the average male-sterile plant was approximately twice that of the average fertile plant. At approximately 100 days after emergence, the assayable nitrogenase activity of the fertile plants fell to zero, whereas the nitrogenase of the partial male-sterile plants continued to be active for two additional weeks. Thus, this male-sterile plant seems to fix dinitrogen both at a higher rate and over a longer duration than does its fertile isoline.
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机译:在毗邻的田间地块中种植了部分不育的不育大豆(ms4 / ms4)(Glycine max L. Merr。)和它们的可育等高线(Ms4 / Ms4)。从出苗后的62天到92天,通过雄性不育植物的乙炔还原测定的固氮酶活性大约是平均可育植物的两倍。出苗后约100天,可育植物的可测氮酶活性降至零,而部分雄性不育植物的可测氮酶继续活跃两周。因此,这种雄性不育植物似乎比其可育同工异物以更高的速率和更长的持续时间固定了二氮。
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