早籼稻加工和外观品质杂种优势表现的研究

Study on the Heterosis of the Appearance and Process Quality of Early season Rice Grian

选用 4个早籼恢复系和 4个不育系 ,采用不完全双列杂交 ,配组 16个杂交组合 ,并对这些组合和亲本进行加工品质和外观品质测定 ,进而分析了各性状的中亲优势、超亲优势、以及亲本的一般配合力 (GCA)。结果表明 ,在整精米率粒形和垩白度等主要性状方面 ,以不育系协青早A和金 2 3A ,及以恢复系 92

The sixteen F 1 hybrids from four male sterile lines and four restorer lines were adopted by the method of incomplete diallele cross,the appearance and process qualities were tested in these combinations and parents,the mid parent and over parent heterosis of each character and general combining ability of parents were analysised. The results showed that male sterile lines of Xieqingzao A and Jin 23A,the restorer line 9247 and their hybrid combinations were better than others in the main characters of head milled rice rate,kernel shape and chalkiness ratio.