继电间接种植的大豆促进结节的发展和固通过根排泄物沉积的固
Ping Lin1, Jin Wang1, Ping Chen1
1College of Agronomy, Sichuan Agricultural University/Sichuan Engineering Research Center for Crop Strip Intercropping System/Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China.
Frontiers in plant science
|January 6, 2025
概括
玉米和大豆的交叉作物可以增加大豆根排泄物和结节的固,增强生长. 然而,它减少了一些品种的结节数量,玉米根排泄物改善了结节的大小和功能.
科学领域:
- 农业学是一种农业学.
- 植物科学 植物科学
- 土壤科学 土壤科学
背景情况:
- 豆类通过根排泄物 (黄类) 吸引树根菌.
- 大豆结节的发育受到根排液和交叉作物的影响.
研究的目的:
- 调查作物根排泄物与大豆结节在杂交作物下的发展之间的关系.
- 量化种植方式和大豆基因型对根排泄物,根茎,结节发育和固定的影响.
主要方法:
- 实地和实验超过两年.
- 继电器交叉耕作与单一耕作进行比较.
- 评估的大豆基因型为NTS1007 (NTS),Nandou-12 (ND) 和Guixia-3 (GX). 这些基因型包括:
主要成果:
- 玉米和大豆的交叉作物增加了大豆根排液 (daidzein,genistein) 和改变了根茎菌群体结构.
- 结节的数量在间接种植的大豆中减少,但结节大小,干重和根干重在基因型ND中增加.
- 插入增强结节酶活性和nifH基因表达,特别是在ND和GX.
- 玉米根排泄物增加了结节直径和固定,对GmEXPB2进行上调.
结论:
- 玉米-大豆中继交叉种植增强了大豆结节信号和固.
- 玉米根排泄物可以改善结节的大小和功能,但效果因大豆基因型和结节能力而异.
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