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- W3198136176 abstract "The morphology of the rice system was established by analyzing varietal differences. Four rice varieties, Koshihikari, Dobashi 1, IR36 and Lemont, were grown in an experimental paddy under ordinary condition. Soil monolith were taken from the direct-foot of a hill and from the midpoint among hills at the ripening stage. After washing out roots carefully, the and the weight of roots at different soil depths were measured. The number and the growth angle of nodal roots were also examined in the same four varieties. With these data, the amount and the root depth as an index of distribution were calculated. The system morphology of the four varieties were quantitatively characterized with these two indices: Koshihikari has a system with a small amount and a shallow distribution, Lemont large amount and deep distribution, IR36 large amount and shallow distribution,and Dobashi the moderate of these three other varieties, respectively. Furthermore, it was shown that the amount was determined by the combination of the number of nodal roots and the length (the mean of a nodal including the lateral roots of any order). The root depth index, on the other hand, was determined by the combination of the mean growth angle of nodal roots and the length. The contribution of these determining factors differed among cultivars. For instance, the large amount depended on the large number of nodal roots in IR36 and on the large length in Lemont, respectively. The deep distribution of roots in Dobashi 1 was due to large length whereas to the large mean growth angle in Lemont." @default.
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- W3198136176 date "1995-01-01" @default.
- W3198136176 modified "2023-09-26" @default.
- W3198136176 title "Analysis on root system morphology in rice [Oryza sativa] with reference to varietal differences at ripening stage." @default.
- W3198136176 hasPublicationYear "1995" @default.
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