Evaluation and Selection of Identification Indices for NO3-Tolerance at Sprout and Seedling Stages of Melon Germplasms
ZHAO Weixing
CHANG Gaozheng
GAO Ningning
LI Hailun
LIANG Shen
KANG Liyun
XU Xiaoli
LI Xiaohui
Abstract：In order to screen salt-tolerant materials and provide early identification indices of melon,150 mmol/L NO3-solution was used to treat 23 melon germplasms at sprout and seedling stages,and based on subordinate function values and total subordinate function value of salt damage coefficient,the salt tolerance was compared and the salt tolerance identification indexes were screened.The result showed that the responses of different melon germplasms to NO3-stress treatment were obviously different and salt tolerance at sprout and seedling stages was varied.Four salt tolerant materials were the same,which occupied 57.14％ and 25.00％ of salt tolerant materials at sprout stages and seedling stages respectively,and the same rate of salt tolerant and medium salt tolerant materials was 90.00％.Radicle dry weight and main radicle length were screened as salt resistance identification indexes for melon at sprout stages,and stem diameter,root dry weight,strong seedling index,chlorophyll a + b/carotenoids and above ground dry weight could be used as salt resistance appraisal indicators for melon at seedling stage.
Keywords：Melon germplasmSprout stageSeedling stageNO3-toleranceIdentification indices
Publication Date：2018-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 84-89 )