中国农业科技导报2025，Vol.27Issue(2)：42-50,9.DOI:10.13304/j.nykjdb.2023.0430
土壤盐分胁迫下甜高粱生育后期茎秆生长及其糖分积累的动态变化特征
Dynamic Characteristics of Stem Growth and Sugar Accumulation of Sweet Sorghum at Late Growth Stage Under Soil Salt Stress
摘要
Abstract
To study the characteristics of stem growth and sugar accumulation in sweet sorghum under soil salt stress in the later stage of growth,Liaotian 1 sweet Sorghum variety was used as the material,with 5 soil salt contents at 1.02,2.15,2.50,3.00 and 4.59 g·kg-1.The growth indicators and sugar content of stem during flag leaf stage,filling stage,dough stage and ripening stage were measured under different salt stresses,and comprehensive analysis and evaluation were conducted using analysis of variance and membership function method.The results showed that under the same soil salt stress,with the growth period progresses,the height and stem diameter of Liaotian 1 remained stable after the filling stage,the fresh weight and dry weight showed a trend of first increasing and then decreasing,brix,total sugar,and sucrose gradually accumulate,the contents of fructose and glucose showed a trend of first decreasing and then increasing.During the same growth stage,with the increase of soil salt content,the height,stem diameter,fresh weight,dry weight,brix,total sugar content and sucrose content of sweet Sorghum showed a trend of first increasing and then decreasing,the content of glucose and fructose continues to decrease;the plant height,stem diameter,fresh weight,dry weight,brix,and total sugar all reached their maximum values under a salt treatment of 2.15 g·kg-1.The sucrose content reached to maximum value under the salt treatment of 2.50 g·kg-1.When the soil salt content exceeded 3.00 g·kg-1,the stem growth indicators and sugar content significantly decreased.Therefore,an appropriate soil salt content(2.15 g·kg-1)could promote the growth and sugar accumulation in Liaotian 1.However,when the soil salt content exceeds 3.00 g·kg-1,the growth and sugar accumulation of stems were inhibited,and the higher the soil salt content,the more significant the inhibitory effect.Above results provided a basis for the study of the stress resistance mechanism of sweet Sorghum and the development of cultivation techniques for planting sweet Sorghum on marginal lands such as saline alkali land.关键词
土壤盐分胁迫/甜高粱/生育后期/茎秆糖分Key words
soil salt stress/sweet Sorghum/late growth stage/sugar content in stem分类
农业科学引用本文复制引用
马婷婷,赵延蓉,魏玉清,王悦娟,王雪飞,张二东..土壤盐分胁迫下甜高粱生育后期茎秆生长及其糖分积累的动态变化特征[J].中国农业科技导报,2025,27(2):42-50,9.基金项目
国家自然科学基金项目(31960387) （31960387）
北方民族大学高层次人才项目(2019BJLZ02). （2019BJLZ02）
