| 甘蓝型油菜秸秆水浸液对水稻萌发和生长的化感作用 |
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| 引用本文： | 邹子湘,刘营,周定港,刘丽莉,张大为,吴金锋,李莓,严明理.甘蓝型油菜秸秆水浸液对水稻萌发和生长的化感作用[J].中国油料作物学报,2022,44(6):1286. |
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| 作者姓名： | 邹子湘 刘营 周定港 刘丽莉 张大为 吴金锋 李莓 严明理 |
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| 作者单位： | 1.湖南科技大学生命科学学院，湖南 湘潭，4112012.湖南科技大学经济作物遗传改良与综合利用湖南省重点实验室，湖南 湘潭，4112013.湖南科技大学重金属污染土壤生态修复与安全利用湖南省普通高等学校重点实验室，湖南 湘潭，4112014.湖南省作物研究所，湖南 长沙，410125 |
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| 基金项目： | 国家重点研发计划(2018YFD1000904);湖南省重点研发计划项(2020NK2045);湖南省经济作物遗传改良与综合利用重点实验室开放基金项目(E22011) |
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| 摘 要： | 为探究油-稻种植制度中甘蓝型油菜秸秆对水稻的影响，研究了不同浓度（0、25%、50%和75 %）的3种油菜（沣油737、湘杂油553和中双11）秸秆水浸液处理下，五优308和C两优343两个水稻品种种子萌发和幼苗生长的情况。结果表明，与对照相比，秸秆水浸液总体增加了幼苗的苗高和鲜重，低浓度（25%）下会提高水稻种子的发芽率、发芽指数和幼苗的根长，高浓度（50%和75%）下则起抑制作用。随着浓度增加，湘杂油553的秸秆水浸液提高了五优308幼苗的可溶性蛋白含量，同时降低了其总超氧化物歧化酶（T-SOD）和过氧化物酶（POD）活力；但对C两优343幼苗表现相反的化感作用，显著降低了其可溶性蛋白含量，而提高了其T-SOD和POD活力，25%浓度下显著降低了其丙二醛（MDA）含量。75%浓度的中双11水浸液显著提高了五优308幼苗的MDA含量，并降低了POD活力。25%浓度的沣油737显著降低了C两优343的可溶性蛋白含量而提高了T-SOD和POD活力。综合结果表明，油菜秸秆水浸液浓度越高，对水稻的化感作用越强，且不同油菜品种水浸液对不同水稻品种的化感作用存在差异，本研究中沣油737和五优308是比较适合油-稻轮作的组合。
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| 关 键 词： | 甘蓝型油菜秸秆 水浸液 种子萌发 幼苗生长 |
| 收稿时间： | 2021-10-22 |
Allelopathy of Brassica napus straw aqueous extract on germination and growth of rice |
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| Zi-xiang ZOU,Ying LIU,Ding-gang ZHOU,Li-li LIU,Da-wei ZHANG,Jin-feng WU,Mei LI,Ming-li YAN.Allelopathy of Brassica napus straw aqueous extract on germination and growth of rice[J].Chinese Journal of Oil Crop Sciences,2022,44(6):1286. |
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| Authors: | Zi-xiang ZOU Ying LIU Ding-gang ZHOU Li-li LIU Da-wei ZHANG Jin-feng WU Mei LI Ming-li YAN |
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| Abstract: | In order to explore the effect of Brassica napus straw on rice in the oil-rice cropping system, Fengyou 737, Xiangzayou 553 and Zhongshuang11, three rape cultivars were selected to prepare the straw aqueous extract with different concentrations （ 0, 25%, 50% and 75%）, the germination and growth of two rice seeds（Wuyou 308 and C Liangyou 343）were investigated, and the results suggested that rape straw aqueous extract increased the rice seedling height and fresh weight generally. Meanwhile, rape straw aqueous extract affected the germination ratio, seedling root length of rice in a concentration-dependent way. The germination ratio, germination index of rice seeds and seedling root length were increased at low-concentration of 25%, but decreased at the higher-concentrations of 50% and 75%. As the concentration increased, the aqueous extract of Xiangzayou 553 increased the soluble protein content and significantly reduced the activity of superoxide dismutase （T-SOD） and peroxidase （POD） of Wuyou308 seedlings. In C Liangyou 343 seedlings, the T-SOD and POD activity significantly increased while the protein content greatly decreased; at 25% concentration, the malondialdehyde （MDA） content also noticeably decreased. The aqueous extract of Zhongshuang 11 at 75% concentration increased the MDA content and decreased the POD activity of Wuyou 308 seedlings. Fengyou 737 at 25% concentration greatly decreased the soluble protein content of C Liangyou343 seedlings but increased the activity of T-SOD and POD. In conclusion, the higher the concentration of the rape straw aqueous extract, the stronger its allelopathic effects on rice germination and seedling growth. However, allelopathic effects of extracts from different rape varieties on different rice varieties were different. Our study suggested that the combination of Fengyou 737 and Wuyou 308 is more suited for an oil-rice system. |
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| Keywords: | Brassica napus straw aqueous extract seed germination seedling growth |
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