Evaluation of the Salt Tolerance of Five Hybrid Mulberry Germplasms

doi:10.11924/j.issn.1000-6850.casb2021-0848

Abstract

Abstract:

In order to select varieties with high salt tolerance from widely planted hybrid mulberry germplasms, the authors took ‘Jisang 3’, ‘Luza 1’, ‘Zheza 1’, ‘Guisangyou 12’ and ‘Guisangyou 62’ as the research objects. Through the seedling growth test under salt stress, the physiological and biochemical indexes of seedling height, plant biomass, leaf chlorophyll content, net photosynthetic rate, stomatal conductance, proline content and malondialdehyde content were analyzed. The results showed that in 6‰ NaCl treatment, the growth and development, plant height and biomass of mulberry seedlings were inhibited to varying degrees. At the same time, the chlorophyll content and photosynthetic physiological parameters of mulberry seedlings under salt stress were measured. As a result, ‘Guisangyou 62’ showed only slight leaf yellowing, good plant growth, little change in plant height and biomass, and strong salt tolerance. As an ecological forest tree species, mulberry plays an important role in soil and water conservation, returning farmland to forest and improving saline-alkali land.

Key words: mulberry, salt tolerance, NaCl stress

CLC Number:

S888.2

ZHANG Liqin, YIN Hongyan, MU Shuyuan, FU Junhui, LI Yan. Evaluation of the Salt Tolerance of Five Hybrid Mulberry Germplasms[J]. Chinese Agricultural Science Bulletin, 2022, 38(17): 62-68.

Figures/Tables 5

References 24

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光反应模型	品种	量子效率Φ/ [μmol/(m²·s)]	最大净光合速率P_nmax/ [μmol/(m²·s)]	饱和光强LSP/ [μmol/(m²·s)]	光补偿点LCP/[μmol/(m²·s)]	暗呼吸速率R_d/[μmol/(m²·s)]	R²
矩形双曲修正模型	浙杂1号	0.0104	5.9226	1475.0275	65.615	0.6194	0.992
	冀桑3号	0.0097	4.0004	1270.2162	81.5858	0.7884	0.992
	桂桑优62号	0.0160	5.9659	1512.0544	31.8527	0.2689	0.998
	鲁桑1号	0.0085	2.7514	1025.4749	86.2612	1.1427	0.995
	桂桑优12号	0.0103	5.0339	1401.5526	79.6137	0.7803	0.994

光反应模型	品种	量子效率Φ/ [μmol/(m²·s)]	最大净光合速率P_nmax/ [μmol/(m²·s)]	饱和光强LSP/ [μmol/(m²·s)]	光补偿点LCP/[μmol/(m²·s)]	暗呼吸速率R_d/[μmol/(m²·s)]	R²
矩形双曲修正模型	浙杂1号	0.0104	5.9226	1475.0275	65.615	0.6194	0.992
	冀桑3号	0.0097	4.0004	1270.2162	81.5858	0.7884	0.992
	桂桑优62号	0.0160	5.9659	1512.0544	31.8527	0.2689	0.998
	鲁桑1号	0.0085	2.7514	1025.4749	86.2612	1.1427	0.995
	桂桑优12号	0.0103	5.0339	1401.5526	79.6137	0.7803	0.994