CAJ | 학술논문

用已建立的白桦离体再生培养体系对20个白桦杂交优树(Betula platyhylly×Betula pendula)腋芽进行了离体培养,比较它们腋芽再生和愈伤组织再生情况,并分析了无性繁殖的变异情况.结果表明:20个优树腋芽启动率存在的差异较大,最高的为4号和7号优树,为75.0%,最低的为17号优树,仅24.4%;3号和16号优树的启动率较高,分别为63.1%、61.3%;3号和 16号优树在腋芽增殖和愈伤组织再生途径中长势都比其它植株好,选择它们用于工厂化育苗,可以满足造林和生产需要.
용이건립적백화리체재생배양체계대20개백화잡교우수(Betula platyhylly×Betula pendula)액아진행료리체배양,비교타문액아재생화유상조직재생정황,병분석료무성번식적변이정황.결과표명:20개우수액아계동솔존재적차이교대,최고적위4호화7호우수,위75.0%,최저적위17호우수,부24.4%;3호화16호우수적계동솔교고,분별위63.1%、61.3%;3호화 16호우수재액아증식화유상조직재생도경중장세도비기타식주호,선택타문용우공엄화육묘,가이만족조림화생산수요.
Axillary buds of twenty superior hybrid individuals (Betula platyphylla × B. pendula) were cultured using the estab-lished in uitro regeneration system of birch. The difference in asexual propagation of all the superior birch trees was ana-lysed in terms of the regeneration of axillary buds and callus induction. An obvious difference in the initiation rate of shoots derived from the sprouted axillary buds were found between the 20 superior trees, among which No. 4 and No. 7 showed the highest initiation rate (75 percent) , No. 17 exhibited the lowest one (24.4 percent) , and No. 3 and No. 16 displayed the higher ones (63. 1 percent and 61.3 percent). However, in the process of axillary propagation and callus regeneration, the growing situation of No.3 and No. 16 was better than that of the others. Therefore, No. 3 and No. 16 superior birch trees could be selected for the industrialized seedling production in order to meet the need of afforestation and production.