一个来源于隐性高秆水稻02428h的矮秆迟熟突变体02428ha

在隐性高秆水稻02428h中发现1个矮秆迟熟突变体02428ha。该突变体与02428h相比,抽穗期延迟32d左右,表现很强的感光性;株高降低60 0cm左右,主要是倒1、倒2节间长度变短,分别缩短34 0cm和19 0cm;倒1和倒2节间的株高构成系数(各节间长度占株高的百分比)分别降低8 6和3 1个百分点;穗长缩短10 0cm,每穗一次枝梗数减少2 4个,每穗总粒数和每穗实粒数分别减少125 0粒和108 0粒,但结实率无明显差异。与02428h一样,02428ha也具有广亲和特性。

A Dwarf and Late Mature Mutant02428ha from Recessive Tall Rice 02428h

hawas a dwarf and late mature mutant found in rice02428hwith elongated uppermost internode gene eui derived from a wide compatibility rice 02428.The heading date of the mutant was 32 days later than the initial line 02428h,showing typical photoperiod sensitivity;the plant height of 02428ha was 60 0 cm shorter than 02428h,due to the reduction of the lengths of the up two internodes by 34 0 cm and 19 0 cm,respectively;the plant height component coefficients(the percentage of a internode length of its plant height)of the uppermost and the second internodes reduced 8 6 percentage point and 3 1 percentage point respectively;the panicle length was 10 0 cm shorter than 02428h;the number of primary branches,spikelets and filled grains per panicle were 2 4,125 0 and 108 0 less than 02428h;there was no difference between the mutant and initial line in seed setting rate.The mutant was widely compatible to indica and japonica as the initial line 02428h