论文部分内容阅读
果肉厚、核焦小是龙眼品种的优良性状之一.目前生产上焦核龙眼为数不多,仅发现稀少优良单株,这些单株有的果实不够大,有的焦核率偏低或不稳定.目前尚没有发现全焦核的龙眼单株,同时由于焦核种子播种不能发芽,要想进一步的筛选难度更大.为了克服上述困难,我们进行解剖观察结果发现龙眼产生焦核的原因系在胚发育过程中发生败育现象;因而,从胚培养方面着手进行试验,经努力,现已在二个焦核龙眼品种上(闽焦64—1和闽焦64—4)取得成功,促进焦核胚萌发成苗,并己土培成活,成功率较高.在研究过程中,通过无性胚的增殖与分化,快速繁殖多个单株无性系,在短时间内得到遗传性状一致的大量植株,这对大量繁殖焦核单株无性系
Flesh thick, nuclear coke is one of the fine traits of longan varieties.At present, the production of coke longan few, only rare fine plants found, some of these single fruit is not big enough, and some coke nuclear rate is low or not Stable. At present, we have not found any single plant with full-focus nuclear longan and at the same time it is more difficult to further screen because of the inoculation of coke seed. In order to overcome the above difficulties, we conducted anatomical observation and found that the cause of coke- Abortion occurs during embryo development; therefore, testing from embryo culture has been successful and is now successful in promoting the development of two coke-core longan varieties (Minjiao 64-1 and Minjiao 64-4) Coke seed embryos germinate into seedlings, and have been cultivated soil, the success rate is higher.In the process of research, through the proliferation and differentiation of asexual embryos, rapid propagation of multiple clones, in a short period of time to get a large number of genetic traits Plants, which cloned a large number of clonal single clones