空间技术诱发的水稻早熟突变系的品质性状变异

对空间技术诱发产生的 9个水稻早熟突变系分析表明 :与原亲本相比 ,突变系的外观品质变化明显 ;表观直链淀粉含量 (AAC)出现高、中、低 3种变异 ;多数突变系的淀粉粘滞特性和碱消值比原亲本差 ,少数相似 ;胶稠度与原亲本相仿或明显改良 ;除突变系SP5 0 1外 ,农艺性状变差 ,但千粒重增加明显。

VARIATION IN EATING QUALITY OF EARLY MATURING MUTANT LINES OF RICE INDUCED BY SPACE TECHNIQUE

Variations in eating quality of 9 mutant lines derived from single season indica rice variety Jingxian89 by the treatment of space technique were investigated.The result indicated that the exterior quality of some mutant lines including grain shape and endosperm appearance changed obviously.AAC was induced into three categories:low,moderate and high AAC.Alkali spreading value and starch viscosity of most mutant lines were significantly worse than those of the original parent.However,the gel consistence of mutant lines was similar or improved obviously.Except SP501,major agronomic traits of mutant lines were worse than those of the control,but one thousand grains weight increased obviously.