桉树一次性授粉研究

以一次性授粉研究了细叶桉与粗皮桉等其他桉树花粉杂交情况,试验结果表明以细叶桉为母本,粗皮桉为父本的杂交成功率较高,授粉后至采种,成功率在93%以上,细叶桉与粗皮桉,EC18,U6的亲和性较大;与巨桉亲和性一般;与韦93亲和性相对较差。在母株相同的情况下,授粉过程中的人为影响是主要因素,包括操作过失对花蕾、树枝的无意伤害等;授粉后至采种主要受自然环境的影响,包括风、雨等因素。

Studied on Once Only Controlled Pollination of Eucalyptus

The hybrid experiment between E.tereticornis and other eucalypts such as E.pellita was carried out by once only controlled pollination. The results were showed:the hybrid combination of E.tereticornis as mother tree and E.pellita as father tree was the best treatment among the combinations. Its success rate was up to 93%. The affinity of E.tereticornis as mother parent and E.pellita,EC_ 18 (clones) and U_6(clones) as father parent respectively were all good,and E.grandis as father parent was general,but E.wetarensis as father parent was not good. The affected factors came from many aspects. When parent was the same,human autivities were the main factor during pollination,and natural factors including wind,rain,etc were dominant from pollination finished to seeds collection.