5种核果类果树的耐盐性与抗盐性分析

为了筛选耐、抗盐桃树砧木,笔者以蒙古扁桃、长柄扁桃、毛桃、筑波4号实生苗和毛樱桃扦插苗为试材,研究其耐盐性、抗盐性及其分离情况。结果表明:正常生长的基质含盐量:毛樱桃接近0.08 g/kg,其他树种/品种<1.8 g/kg;致死基质含盐量:毛樱桃1.8 g/kg,筑波4号、长柄扁桃、毛桃2.8 g/kg,蒙古扁桃>4.8 g/kg。蒙古扁桃、毛桃、长柄扁桃、筑波4号、毛樱桃的抗盐性分别为极强、强、中、弱、极弱。5个树种/品种的实生后代均存在显著的耐盐性及抗盐性分离现象,分离范围:毛樱桃<筑波4号、蒙古扁桃<长柄扁桃<毛桃,可从中筛选抗性较强的植株。

Study on Salt-tolerance and Salt-resistance of Five Stone Fruit Trees

In order to selecte salt-resistence rootstock,the salt resistance and segregation of P.mongolica,P.pedunculata,P.persica,P.persica cv.tsukuba-4' were studied by seedings and P.tomentosa was studied by cutting seedings.The results showed that the salt content in substrate of P.tomentosa when growing normally was close to 0.08g/kg,and other species were less than 1.8g/kg.The lethal salt content in substrate of P.tomentosa was 1.8g/kg,and P.pedunculata.P.persica and P.persica cv.tsukuba-4'were 2.8g/kg,and P.mongolica was more than 4.8g/kg.The salt resistance ability of P.mongolica,P.persica,P.pedunculata,P.persica cv.tsukuba-4' and P.tomentosa were stronger,strong,moderate,weak and weaker,respectively.The seeding progenies of the 5 species exhibited obvious segregation phenomenon of salt resistance.The segregation range were that: P.tomentosa