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农学学报

农学学报 ›› 2021, Vol. 11 ›› Issue (12): 68-73.doi: 10.11923/j.issn.2095-4050.cjas20200300052

所属专题： 油料作物

• 林学/园艺/园林/食用菌 • 上一篇    下一篇

不同密度网罩对甘蓝型油菜隔离制种效果比较

文雁成(), 张书芬, 何俊平, 蔡东芳, 朱家成, 王建平, 曹金华, 胡坤, 赵磊, 王东国   

  1. 河南省农业科学院经济作物研究所/农业部黄淮海油料作物重点实验室/河南省油料作物重点实验室,郑州 450002
  • 收稿日期:2020-03-09 修回日期:2020-05-25 出版日期:2021-12-20 发布日期:2022-01-14
  • 作者简介:文雁成,男,1965年出生,河南光山人,研究员,博士,研究方向：油菜遗传育种。通信地址：450002 河南省郑州市花园路116号 河南省农业科学院经济作物研究所,Tel：55115366,E-mail： ychwen65@163.com。
  • 基金资助:
    科技部“十三五”重点研发计划项目“油菜杂种优势利用技术与强优势杂交种创制”(2016YFD0101300);河南省科技厅科技攻关计划项目“甘蓝型油菜强优势抗逆双低优质萝卜质不育杂交种选育”(182102110430)

Hybrid Seed Production of Brassica napus L.: Isolation Effect Comparisons of Different-density Nets

WEN Yancheng(), ZHANG Shufen, HE Junping, CAI Dongfang, ZHU Jiacheng, WANG Jianping, CAO Jinhua, HU Kun, ZHAO Lei, WANG Dongguo   

  1. Institute of Industrial Crops of Henan Academy of Agricultural Sciences/Key Laboratory of Oilseed Crops in Huanghuaihai Plain of the Ministry of Agriculture/Henan Key Laboratory of Oilseed Crops, Zhengzhou 450002, Henan, China
  • Received:2020-03-09 Revised:2020-05-25 Online:2021-12-20 Published:2022-01-14

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摘要：

旨在考察网罩密度对油菜制种的影响。以甘蓝型油菜Polima和萝卜2种胞质雄性不育系为试验材料,研究网罩对光照、温度、湿度、菌核病发病率以及制种产量的影响。结果表明：（1）网罩内光照强度随密度增加而显著下降。（2）罩内温度普遍上升,但是差异并不都显著。（3）网罩内湿度总体上是随网罩密度增加而升高。但是,也存在例外。（4）随着密度的增加,网罩内菌核病发病率升高。（5）试验中即使最大密度的网罩（160目）,也不能完全阻隔外来花粉。（6）对于Polima和萝卜胞质雄性不育系,相同密度的网罩造成杂交制种产量的下降幅度相近。因此,网罩对Polima和萝卜胞质雄性不育系存在相似影响,现在常用的网罩密度不能达到完全阻隔外来花粉的目的。

关键词: 甘蓝型油菜, 制种, 尼龙网罩, 密度, 隔离效果

Abstract:

The objective of this study is to investigate the effect of nylon net density on seed production of Brassica napus L. Polima cytoplasmic male sterile (Polima CMS) line and a radish cytoplasmic male sterile (Ogu CMS) line of Brassica napus L. were used as materials. The effects of nets on the light, temperature, humidity, the incidence of Scleritinia sclerotiorum and seed-production yield were investigated. The results were as following. (1) Light intensities in the nets decreased significantly along with the increase of net densities. (2) The temperature in all nets raised, but some of the temperature increase did not reach a significant level. (3) Humidity in most nets increased with the increase of net density, but there were some exceptions. (4) The incidence of Scleritinia sclerotiorum increased with the increase of net density. (5) Even the densest net (160 net mesh number per square inch (NMNPSI)) could not prevent outside pollens entering into the nets. (6) Of the same density nets, the decrease rate of hybrid yield of Polima CMS lines was similar to that of Ogu CMS lines. Consequently, the effects of net density on both Polima CMS and Ogu CMS are similar, the present popular densities of nets are not enough to prevent outside pollens entering into nets.

Key words: Brassica napus L., Seed Production, Nylon Net, Density, Isolation Effect

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