大豆科丰14诱变系主要农艺性状和品质性状变异分析

为研究辐照后大豆诱变后代的变异规律,对大豆‘科丰14’和其20个60Coγ辐照诱变系主要农艺性状和品质性状进行测定和分析。结果表明：共有13个诱变系生育期延迟7天以上,16个诱变系在株高、主茎节数、茎粗、单株荚数、单荚粒数、百粒重和单株产量等性状上呈显著变异,7个诱变系底荚高度有显著变异,4个诱变系蛋白质含量变异显著,6个诱变系脂肪含量变异显著,3个诱变系异黄酮含量变异显著。共有18个诱变系单株产量显著提高,分别有18个和11个诱变系的单株荚数和百粒重显著增加,分别有15个和7个诱变系的单荚粒数和百粒重显著减少。诱变系蛋白质含量呈下降趋势,脂肪、异黄酮含量呈上升趋势。各诱变系的农艺性状变异较大,品质性状变异较小。

The variation analysis of main agronomic and quality traits of mutation lines derived from soybean Kefeng 14

In order to parse the law of traits variation of soybean＇ s offspring after irradiation, the mainagronomic and quality traits of soybean ＇ Kefeng 14＇ and 20 mutation lines which were irradiated by 60Coγrayderived from ＇Kefeng 14＇ were investigated and analyzed. The results showed that the days of maturity of 13mutation lines delayed more then 7 days. 16 mutation lines had significant variation in plant height, nodenumber of main stem, mai stem diameter, pods number of per plant, seed number of per pod, 100-seed weightand yield of per plant. There were significant variation appeared to bottom pod height and the content ofprotein, fat and isoflavone for 7, 4, 6 and 3 mutation lines, respectively. The yield of per plant, pod number ofper plant and 100-seed weight was significant increased for 18, 18 and 11 mutation lines, respectively. Theseed number of per pod and 100-seed weight was significant decreased for 15 and 7 mutation lines,respectively. The decreasing tendency of protein content and increasing tendency of fat and isoflavone contentwas observed in each mutation lines. The variation of agronomic traits was more than quality traits of allmutation lines.