2024-03-28T14:46:51Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00001598
2022-12-15T03:34:20Z
453:454
485:486:487
Variation of Vascular Bundle System Corresponds to indica, Tropical-and Temperate-japonica Differentiation of Asian Rice (Oryza sativa L.)
Fukuyama, Toshinori
4509
Sasahara, Hideki
4510
Fukuta, Yoshimichi
4511
Oryza sativa
indica
japonica
classification
vascular bundle
Variation of the vascular bundle system in 83 Asian rice cultivars and its usefulness in the distinction of the 3 types, indica, tropical-japonica and temperate-japonica were investigated. The 83 cultivars were classified into 46 indica and 37japonica cultivars by the discriminant function, D_1, based on the data of phenol reaction, sensitivity to KCI0_3 and apiculus hair length. Next, the 37japonica cultivars were subdivided into 8 tropical- and 29 temperate-japonica using the score of D_2 which was computed from the ratio of length to width of the kernel, alkali digestibility and mesocotyl length. The number of vascular hundles(Vb) in the peduncle and the ratio of Vb to rachis branches(Rb)(V/R ratio) differed among the 3 types; the indica and tropical-japonica cultivars had more Vbs and showed a higher V/R ratio than the temperate-japonica cultivars. Then, the new discriminant function(D_3) for identification of indica and japonica and D_4 for that of tropical- and temperate-japonica were calculated based on Vb, Rb and V/R ratio. D_3 and D_4 improved the precision of distinguishing indica from japonica, and tropical- from temperate-japonica; the probability of misclassification decreased from 1.4%(D_1) to 0.7%(D_3), and from 4.8%(D_2) to 0.4%(D_4), respectively. In conclusion, the variation of vascular bundle system was a highly useful character for identification of Asian rice cultivars.
journal article
日本育種学会
1999-03
application/pdf
Breeding science
1
49
15
19
AA11353132
1344-7610
https://niigata-u.repo.nii.ac.jp/record/1598/files/110001815392.pdf
eng
http://doi.org/10.1270/jsbbs.49.15
http://ci.nii.ac.jp/naid/110001815392
日本育種学会
本文データは学協会の許諾に基づきCiNiiから複製したものである