野生新疆桃抗酸碱盐性评价

为探明野生新疆桃抗酸碱盐种质资源价值,以360株野生新疆桃实生苗为试材,采用pH 3.5H3PO4溶液、pH 9.5KOH溶液和0.4%NaCl溶液灌根处理的方法,评价其对酸、碱和盐的抗性。结果表明:1)野生新疆桃为极强抗酸型树种,实生个体间抗性差异显著,分离为极强、强、中等3种抗酸型植株,分别占群体总数的86%、9%和5%。2)野生新疆桃为极强抗碱型树种,实生个体间抗性差异显著,分离为极强抗和强抗2种抗碱型植株,极强抗碱型和强抗碱型植株分别占群体总数的98%和2%。3)野生新疆桃为弱抗盐型树种,其实生个体间抗性分离广泛,存在极强、强、中等、弱、极弱全部5种抗盐型植株,分别占群体总数的8%、9%、19%、61%和3%。结果显示,野生新疆桃是优良的抗酸碱型砧木树种和抗酸碱盐型种质资源。

Evaluation on the resistance of wild Prunus ferganensis to acidity, alkalinity and salinity

In order to research the resistance and the germplasm resource value of wild Prunus ferganensis to acidity, alkalinity and salinity, the experiment used 360 seedlings, which were treated with pH 3.5 H₃PO₄ solution and pH 9.5 KOH solution for 16 days, and with 0.4% NaCl solution for 30 days.The results showed from the three following aspects.1) Wild P.ferganensis seedlings had extremely high resistance to acidity and there were significant differences among them.The corresponding percentages of extremely high resistance, high resistance and medium resistance were 86%, 9% and 5% respectively.2) Wild P.ferganensis seedlings had extremely high resistance to alkalinity and the differences were significant.The seedlings could only be separated into two types, including extremely high resistance and high resistance.The percentage of extremely high resistant plants was up to 98%.3) Wild P.ferganensis seedlings had weak resistance to salinity.The seedlings were widely segregated.The corresponding percentages of extremely high resistance, high resistance, medium resistance, weak resistance and extremely weak resistance were 8%, 9%, 19%, 61% and 3% respectively.The results indicate that wild P.ferganensis is a good rootstock species and a germplasm resource with excellent resistance to acidity, alkalinity and salinity.