| 一, In this research , the material is provided by Research Centre of Rice. Guizhou University, CMS lines: WA426A×59 (1152 ) , WAxinxiangA×59 ( 1154 ) , WAzhengshan97×59 (1157), K59A (1153), G59A (1155), D59A (1156) and its maintainer line 59B (1151) analyze and compare the CMS, The main result is follows:1, The leafs agronomic characters 。 It was shown that isonucleus-allocytoplasmic CMS lines have no significant difference in most of agronomic characters except in the tillering capacity in late growth stage and the flag leaf angle (D59A and WA59A). In this CMS lines, K59A' s tillering capacity is the most strong, D59A is the most weak;2, The habits of panicle drawing and flowering. 。 In the panicle drawing of 6 CMS lines, K59A were faster than D59A, except for 59B。 D64A was the most slow。 In flowering temperament, The high peak of the K 59A, D 59A were advance 1h more than two others , and the K 59A have two high peak periods, the rate of its spikelets flowering in this time 41.13% in a day;3, Spikelet traits。Spikelet opening time of WAxinxiangA×59 (1.66h) was longest. The order of other material in the sequence of decending was WAzhengshan97A×59, K59A, WA426A×59, D59A, G59A, 59B。 Opening angle of spikelet of 6 CMS lines were lower than its maintainer line , but in opening angle of spikelet of 6 CMS lines, D59A is the biggest others;4, Stigma exserted rate.. The order of stigma exserted rate of 6 CMS lines in the sequence of decending was K59A, WAzhengshan97×59, D59A, WA426A×59, WAxinxiangA×59, G59A, and single stigma exserted rate was higher than double stigma exserted rate in themselves 。5, Fertility。 Pollen fertility identified by IZ-KI of 6 CMS lines were showed: the degree of pollen sterility of 6 CMS lines were 100% 。 The seed-setting rate of self-pollination of 6 CMS lines were 100% except K59A (99%).6, It was shown that three defferent source CMS lines of WA (WA426A×59,... |
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