电导法测定寒地杏种质资源的抗寒性

Study on Cold Tolerance of Winter Hardy Armenian Germplasm by Conductance Method

摘要: 对国家果树种质公主岭寒地果树圃保存的10份寒地杏种质资源进行抗寒性的鉴定评价，通过切片镜检观察和电导法测定等方法，筛选出一批抗寒杏资源，为杏抗寒性育种提供有价值的亲本材料。结果表明：麦黄杏、龙垦2杏、眉杏、鸡西早熟甜仁、大叶大白杏、铃铛杏和桦甸杏可抗−35℃的低温，但眉杏、大叶大白杏和铃铛杏可能出现4级的冻害；同发杏、桦甸红杏、鸡西粉花可抗−40℃的低温。

Abstract: We identified and evaluated cold resistances of 10 apricot accession germplasm resources which were conserved in National Field Genebank for Hardy Fruits of Gongzhuling in China. We screened a batch of cold resistant apricot germplasm resources through microscopical section examination and conductivity determination method and these resources would be the valuable parent materials for cold resistant apricot breeding. The results show that Maihuang Apricot, Longken 2 Apricot, Mei Apricot, Jixi Zaoshu Tianren Apricot, Daye Dabai Apricot, Lingdang Apricot, and Huadian Apricot are resistant to −35˚C low temperature. But Daye Dabai Apricot and Lingdang Apricot may show the forth level freezing injury. Tongfa Apricot, Huadian Hong Apricot, and Jixi Fenhua Apricot can be resistant to −40˚C low temperature.