多収性日印交雑稲と日本稲の生育時期別に同化された炭素の分配と分げつ生産力の差異 : <13>^Cトレーサー実験による解析

概要

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The structures of ear formation and carbon partitioning (chased by ^13C) in different tillers were compared in semidwarf high-yielding (cv. Suweon 258) and conventional japonica (cv. Musashikogane) varieties. The ear yielding by main culm and primary tillers of Suweon 258 was high as compared with those of Musashikogane. Larger amounts or proportions of the carbon stored in the culms plus leaf sheaths before heading were translocated to the ears in Suweon 258 than in Musashikogane. The amounts of carbon fixed by Suweon 258 afer heading were more than those by Musashikogane based on either leaf dry weight or leaf nitrogen content. The linear relationship between ear weight and amount of fixed carbon was observed among tillers of Suweon 258 after heading, whereas in Musashikogane the relation leveled off at high amounts of fixed carbon, suggesting that the sink size (ear weight) limits yields in Musashikogane.
社団法人日本土壌肥料学会の論文
1990-08-05