茄子种质资源耐盐性鉴定及耐盐评价指标筛选

对190份茄子种质资源进行盐胁迫处理,利用盐害指数和叶绿素损失率鉴定茄子种质资源耐盐性。根据耐盐性鉴定结果,选择15份耐盐性不同的材料进一步进行芽期和苗期耐盐性鉴定,通过对芽期种子相对发芽率、相对发芽势,以及苗期盐害指数、脯氨酸含量和叶绿素含量的测定,筛选适合评价茄子耐盐性强弱的标准。结果显示,刺茄、蒜芥茄、马来亚茄、眉州墨茄和天津二苠茄等5个品种具有较强的耐盐性,除了盐害指数外,相对发芽率、脯氨酸相对增加量和叶绿素损失率也可作为重要的耐盐评价指标。

Salt Tolerance Identification of Eggplant Germplasm Resources and Selection of Salt Tolerance Evaluation Indexes

Salt stress treatment was carried out on 190 eggplant germplasm resources and their salt tolerance was identified by salt damage index together with chrolophyll loss rate. According to the results of salt tolerance identification，15 different materials with different salt tolerance were selected to evaluate their salt tolerance in bud and seedling stages. The relative germination rate，relative germination potential，salt damage index in bud stage，proline content and chlorophyll content were measured to select suitable criterias for evaluating eggplant salt tolerance. The results showed that there were‘Ciqie’，‘Suanjieqie’，‘Malaiyaqie’，‘Meizhoumoqie’and‘Tianjinerminqie’5 varieties possessed stronger salt tolerance. Except salt damage index，the relative germination rate，relative increase of proline content and chlorophyll loss rate could also be used as important index for evaluating salt tolerance.