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Selecting appropriate forage cover crops to improve growth, yield, and fruit quality of wolfberry by regulation of photosynthesis and biotic stress resistance

文献类型： 外文期刊

作者： Wang, Fang 1 ; Zhu, Lizhen 2 ; He, Jun 4 ; Nan, Xiongxiong 2 ; Chen, Haonan 1 ; Yang, Liu 2 ; Jia, Qiaoxia 2 ; Yu, Zelong 2 ; Wang, Hao 5 ; Zhao, Yan 6 ; Yan, Huiqin 7 ;

作者机构： 1.Ningxia Univ, Coll Geog Sci & Planning, Yinchuan 750002, Peoples R China

2.State Key Lab Efficient Prod Forest Resources, Yinchuan 750002, Peoples R China

3.Ningxia Forestry Inst, Yinchuan 750002, Peoples R China

4.Ningxia Acad Agr & Forestry Sci, Inst Wolfberry Sci, Yinchuan 750002, Ningxia, Peoples R China

5.Ningxia Wine & Desertificat Career Tech Coll, Yinchuan 750021, Peoples R China

6.Ningxia Vocat & Tech Univ, Yinchuan 750021, Peoples R China

7.Helan Cty Agr & Rural Affairs Bur, Yinchuan 750200, Peoples R China

关键词： Forage species; Photosynthesis enhancement; Wolfberry growth; Plant diseases; Pests

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.9； 五年影响因子：4.3 ）

ISSN： 0304-4238

年卷期： 2024 年 337 卷

页码：

收录情况： SCI

摘要： Forage cover crops have the potential to improve soil quality and orchard productivity, but their effects on wolfberry (Lycium barbarum L.) plants are still unclear. In this study, we conducted field and greenhouse experiments between 2019 and 2021, with 10 forage species as cover crops. We observed the growth, yield, fruit quality, and photosynthetic characteristics of wolfberry plants, as well as the occurrence of plant diseases and pests. Based on averaged data for all forage species, cover cropping facilitated plant growth, maintained fruit yield, and promoted leaf photosynthesis in wolfberry compared to monocropping. This was exemplified by a notable increase in the branch number of wolfberry plants under ryegrass treatment, with marginal increase in branch length under evergreen grass (lvyuan 5) and mangold treatments. Cover cropping additionally improved wolfberry quality through increasing carotenoid, flavonoid, and ascorbic acid contents by 21%, 53%, and 127%, respectively (P < 0.05). The presence of mangold, alfalfa, sweet sorghum, ryegrass, and feather grass reduced powdery mildew-induced leaf damage in wolfberry plants by 69% (P < 0.05). When alfalfa, feather grass, and ryegrass were used, the risk of aphid infestation was lowered by 67% (P < 0.05). Collectively, the results indicated that mangold, ryegrass, and alfalfa were the optimal cover crops for sustainable wolfberry production in the study area. The use of appropriate forage cover crops enhanced plant growth and fruit quality of wolfberry by stimulating photosynthetic capacity and biotic stress resistance.

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