Breeding of triploids by the reciprocal crossing of Populus alba × P. glandulosa and P. tomentosa × P. bolleana.
Breeding of triploids by the reciprocal crossing of Populus alba × P. glandulosa and P. tomentosa × P. bolleana.
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发表时间：
2000
期刊：
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通讯作者：
Kang Xiangyang;Zhu Zhi-ti;Z. Zhiyi
中科院分区：
文献类型：
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作者：
Kang Xiangyang;Zhu Zhi-ti;Z. Zhiyi
通过杂交获得了16个三倍体。腺虫和绒毛虫。利用未还原的2n花粉和辐射处理花粉。最佳的治疗方法为联合用药。glandulosa) X (P。tomentosaXP。（1 470 rad），获得三倍体的比例为3.8%，而（P. tomentosaXP）组合。bolleana) X (P。albaXP。最佳处理为1 680 rad，比例为12.9%。三倍体的生长比正常二倍体有明显的优势，在单株上更为突出。2年生三倍体幼苗的茎高和基径分别达到4.9 m和5.8 cm，比平均生长高50%和176%。两种不同组合获得的三倍体遗传效应差异显著。
Sixteen triploids were successfully obtained from the hybridization between P. albaXP. glandulosa and P. tomentosaXP. bolleana by using unreduced 2n pollen and treating the pollen with radiation. The best treatment for the combination of (P. albaXP. glandulosa)X(P. tomentosaXP. bolleana) was 1 470 rad and the ratio of obtained triploids was 3.8%, while for the combination of (P. tomentosaXP. bolleana)X(P. albaXP. glandulosa) the best treatment was 1 680 rad and ratio was 12.9%. The growth of triploids showed obvious superiority over normal diploids, and more out-standing for a single tree. Stem height and basal diameter of 2-year old triploid seedling reached 4.9 m and 5.8 cm respectively, being 50% and 176% larger than the average growth. The difference in genetic effect of the triploids obtained from two different combinations was significant.