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首页> 外文会议>Proceedings of the 12th International Rapeseed Congress: Sustainable Development in Cruciferous Oilseed Crops Production >Study on C/N metabolism characteristics in yellow-seed rapeseed (Brassica napus L.) during seedling stage
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Study on C/N metabolism characteristics in yellow-seed rapeseed (Brassica napus L.) during seedling stage

机译：甘蓝型油菜苗期碳/氮代谢特性研究

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摘要

Yellow-seed rapeseed (Brassica napus L.) is characterized with thinner seed coat and lower hull percentage, which in turn is correlated with higher oil, protein and lower crude fiber contents compared to black-seed rapeseed from the same genetic background. The breeding of yellow-seed rapeseed has become one of the main objectives in rapeseed breeding. However the growth vigor and yield of yellow-seed rapeseed were not good as black-seed rapeseed. The growth vigor of rapeseed plants during seedling stage is in connection with its yield significantly. Two pairs of different genetic near-isogenic lines of black-seed and yellow-seed rapeseed (Brassica napus L.) genotypes were used to study the physiological characters of yellow-seed rapeseed in seedling stage, which mainly included photosynthetic characters and characters on C/N metabolism. The results showed that there were higher sugar content and lower protein content, nitrogen content and activity of nitrate reductase in yellow-seed rapeseed plants than in black-seed rapeseed plants regardless of various development stages or various plant organs. It was discovered that chlorophyll content and carotenoid content of yellow-seed rapeseed were lower than those of black-seed rapeseed, and their net photosynthetic rate was also lower compared to black-seed rapeseed from the same genetic background.
机译：与相同遗传背景的黑籽油菜相比，黄籽油菜（Brassica napus L.）的特征是种皮更薄且皮壳百分比较低，这反过来又与较高的油，蛋白质和较低的粗纤维含量相关。黄籽油菜的育种已成为油菜育种的主要目标之一。然而，黄色种子油菜籽的生长活力和产量均不如黑色种子油菜籽。油菜籽苗期的生长活力与其产量显着相关。利用两对不同基因型的黑籽油菜和黄籽油菜（Brassica napus L.）基因型研究了苗期黄籽油菜的生理特性，主要包括光合特性和C上的特性。 / N新陈代谢。结果表明，无论其发育阶段或植物器官如何，与黑籽油菜相比，黄籽油菜的糖含量较高，蛋白质含量，氮含量和硝酸还原酶活性较低。结果发现，与相同遗传背景的黑籽油菜相比，黄籽油菜的叶绿素含量和类胡萝卜素含量均低于黑籽油菜，其净光合速率也低于黑籽油菜。

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