一种新的四棱豆矮化突变体鉴定与分析

经60Coγ射线辐照诱变处理四棱豆种子，从其变异后代中获得一份矮化突变体AT416，并从主要农艺性状、光合特性及营养品质等方面对该突变体进行了鉴定与分析。结果表明，突变体AT416的株高、茎粗等农艺性状发生了明显变化，其株高约48 cm，与对照中翼1号相比，降幅高达89.9 %，差异极显著；叶绿素含量及净光合速率分别提高了6.7 %和13.6 %，后者与对照相比，差异显著；脂肪、VC含量以及嫩荚的可溶性糖含量与对照相比差异极显著，但蛋白质、淀粉和粗纤维含量基本相近。

Identification and Analysis of A New Dwarf Mutant of Winged Bean

A dwarf mutant of winged bean〔Psophocarpus tetragonolobus（L.）DC.〕radiated by 60Coγ was screened from mutant generations. The mutant was studied on its major agronomic characters, photosynthetic characteristics and nutritional quality in this paper. The mutant obviously differed from‘Zhongyi No.1’（contrast）in plant height, stem diameter, etc. Compared with the contrast, variation in mutant plant height（48 cm）was very significantly different, with falling range of 89.9 %. Chlorophyll content and net photosynthetic rate（Pn）increased 6.7 % and 13.6 %, respectively. The latter was significantly different from the contrast. Contents of some nutritional components, including fattiness, VC and dissoluble sugar, were very significantly different, but the contents of protein and faecula were almost the same.