Effects of nitric oxide on pepper growth and resistance indexes at seedling stage and fruit setting initial stage under weak light stress

doi:10.3969/j.issn.1004-1524.2019.12.12

›› 2019, Vol. 31 ›› Issue (12): 2036-2042.DOI: 10.3969/j.issn.1004-1524.2019.12.12

• Horticultural Science • Previous Articles Next Articles

Effects of nitric oxide on pepper growth and resistance indexes at seedling stage and fruit setting initial stage under weak light stress

LI Li¹, TIAN Shilin^1,*, JIANG Jun², SONG Li¹

1. School of Biological Science and Food Engineering, Huanghuai University, Zhumadian 463000, China;
2. Institute of Horticulture, Zhumadian Academy of Agricultural Sciences, Zhumadian 463000, China

Received:2018-05-01 Online:2019-12-25 Published:2019-12-25

Abstract

Abstract: Photosensitive pepper seedlings were used as test materials. After different degrees of shading treatment, the seedlings were sprayed using SNP solution, and the growth and resistance indexes of peppers were determined. The results showed that the diameter, plant height and leaf area of pepper increased after spraying SNP, comparing with the shaded group. The activities of antioxidant enzymes SOD, POD and CAT in leaves increased, meanwhile, the content of chlorophyll b in leaves and the expression level of chlorophyll synthesis-related genes were also generally increased. It was indicated that nitric oxide could alleviate the adverse effects of weak light environment on pepper growth, and improve the photosynthetic performance of pepper leaves in weak light environment to some extent.

Key words: pepper, shade, nitric oxide, antioxidant enzyme, chlorophyll

CLC Number:

S641.3

LI Li, TIAN Shilin, JIANG Jun, SONG Li. Effects of nitric oxide on pepper growth and resistance indexes at seedling stage and fruit setting initial stage under weak light stress[J]. , 2019, 31(12): 2036-2042.

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Effects of nitric oxide on pepper growth and resistance indexes at seedling stage and fruit setting initial stage under weak light stress

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