| 甘蓝型春油菜胚胎发育进程的观察 |
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| 引用本文： | 董一洪,冷锁虎,朱耕如. 甘蓝型春油菜胚胎发育进程的观察[J]. 中国油料作物学报, 1992, 0(1) |
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| 作者姓名： | 董一洪 冷锁虎 朱耕如 |
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| 作者单位： | 江苏农学院(董一洪，冷锁虎)，江苏农学院(朱耕如) |
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| 摘 要： | 试验表明春油菜的胚长、子叶长宽、胚轴长宽的变化基本同步,都呈现S形曲线,增长峰值出现在花后第14—15天,接近最大值的时间在花后第22—25天。胚干重在花后第28天增加最快,日增量达0.24mg.胚细胞数在花后第22天不再增加,此时胚干重仅为其最终胚重的1/5左右,而胚长已接近最大值,施用氮肥能使胚早期发育延缓,同时能防止胚珠退化,增加粒数,提高粒重。
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| 关 键 词： | 春油菜 胚胎发育 氮素 |
OBSERVATION ON EMBRYO DEVELOPMENT IN SPRING RAPE(Brassica napus L.) |
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| Dong Yihong Leng Suohu Zhu Gengru. OBSERVATION ON EMBRYO DEVELOPMENT IN SPRING RAPE(Brassica napus L.)[J]. Chinese Journal of Oil Crop Sciences, 1992, 0(1) |
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| Authors: | Dong Yihong Leng Suohu Zhu Gengru |
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| Affiliation: | Jiangsu Agricultural College |
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| Abstract: | The size of every part of embryo varied as "S" diagram.Their increasing peaks appeared on the 14th to 15th days after flowering,and their maximum appeared on the 22nd to 25th days after flowering.The rate of dry weight increase of embryo reached the highest on.the 28th day as 0.24 mg per day.The number of embryo cell stopped increasing on the 22nd day when the dry weight of embryo was only one fifth of its maximum and the length reached its maximum.Nitrogen could slow down early embryo growth,reduce regenerative embryo and lately promote embryo to grow. |
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| Keywords: | Spring rape Embryo development Cell number Nitrogen |
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