Peanut with High Oleic Acid Content: Identification and Evaluation of Salt-alkaline Tolerance During Germination and Seedling Stage

doi:10.11924/j.issn.1000-6850.casb2023-0461

Abstract

Abstract:

The aims are to screen saline-alkali tolerant peanuts with high oleic acid content, expand the planting area of peanuts in saline-alkali soil, and alleviate the problem of insufficient supply on edible oil. Seed germination rate and salt damage rate during seed germination stage, and seedlings dry weight and salt tolerance coefficient during seedling stage of six peanut varieties with high oleic acid content were studied and analyzed, with a saline-alkali solution of NaCl:Na₂SO₄:NaHCO₃:Na₂CO₃ simulating saline-alkali soil. The results were as follows: the germination rate of peanut seeds and dry weight of seedlings were decreased significantly, with the increase of the concentration of saline-alkali solution. The optimum screening concentration of peanut varieties at germination stage and seedling stage was different, and the saline-alkali tolerance at germination stage and seedling stage was not completely consistent. The saline-alkali tolerant of 6 peanut varieties was determined as‘YH33’>‘YH208’>‘YH18’>‘YH625’>‘YH169’>‘YH91’, evaluated by the membership function values, considering the saline-alkali tolerance both in germination and in seedling stages. The concentration of salt-alkali solution with Na⁺ 100 mmol/L and 150 mmol/L might be the suitable concentration for the salt-tolerant screening in germination stage and seedling stage respectively. ‘Yuhua 33’ was determined as highly salt-alkali tolerant variety under this condition.

Key words: peanut, saline-alkali tolerance, germination stage, seedling stage, salt damage rate, salt tolerance coefficient

LI Jingjing, WANG Jinxiu, CAO Yidan, REN Jianjun, XU Shaohui, TANG Yanyan, WANG Jingshan, QIAO Lixian. Peanut with High Oleic Acid Content: Identification and Evaluation of Salt-alkaline Tolerance During Germination and Seedling Stage[J]. Chinese Agricultural Science Bulletin, 2024, 40(15): 44-52.

Figures/Tables 13

References 29

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盐害率	盐害等级	耐盐碱标准
盐害率≤20%	1	高度耐盐碱
20%<盐害率≤40%	2	中等耐盐碱
40%<盐害率≤60%	3	盐碱敏感
60%<盐害率≤80%	4	中度盐碱敏感
盐害率>80%	5	高度盐碱敏感

盐害率	盐害等级	耐盐碱标准
盐害率≤20%	1	高度耐盐碱
20%<盐害率≤40%	2	中等耐盐碱
40%<盐害率≤60%	3	盐碱敏感
60%<盐害率≤80%	4	中度盐碱敏感
盐害率>80%	5	高度盐碱敏感

	耐盐系数	发芽势	发芽率	发芽指数
耐盐系数	1
发芽势	-0.980^**	1
发芽率	-0.999^**	0.977^**	1
发芽指数	-0.974^**	0.988^**	0.970^**	1

	耐盐系数	发芽势	发芽率	发芽指数
耐盐系数	1
发芽势	-0.980^**	1
发芽率	-0.999^**	0.977^**	1
发芽指数	-0.974^**	0.988^**	0.970^**	1

品种	50 mmol/L	100 mmol/L	150 mmol/L
YH33	0.963a	0.878a	0.483a
YH208	0.583bcd	0.448b	0.329b
YH18	0.608bc	0.404b	0.309b
YH91	0.674b	0.442b	0.311b
YH625	0.422d	0.306c	0.153c
YH169	0.452cd	0.296c	0.160c