LI Jun-jie,ZHAO Yang,JIANG Wen,et al.Discovery and Identification of Male Sterile Germplasm BY-B1 of White Flower Platycodon grandiflorum[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(11):87-91.[doi:10.11942/j.issn1002-2767.2022.11.0087]
白花桔梗雄性不育种质BY-B1的发现与鉴定
- Title:
- Discovery and Identification of Male Sterile Germplasm BY-B1 of White Flower Platycodon grandiflorum
- Keywords:
- Platycodon grandiflorum; male sterile; germplasm
- 文献标志码:
- A
- 摘要:
- 为了开辟桔梗种质资源杂交优势利用的新途径,对在延边大学农学院桔梗试验圃地中所发现的白花桔梗不育种质个体BY-B1进行了花器及散粉情况观察、花粉生活力的测定、小孢子和雄配子体发育情况的观察以及自交、杂交试验。结果表明,白花桔梗雄性不育种质个体BY-B1的花与正常白花桔梗植株个体的花外观差异不大,但其花药皱缩干瘪且没有光泽;无花粉散出,挤出的花粉缺乏活力;雄配子体形状不规则,无精核和营养核;自交坐果率为0,与正常白花、紫花桔梗杂交坐果率为100%, 表明BY-B1为雄性不育,可以利用白花桔梗雄性不育种质进行杂交培育新品种。
- Abstract:
- In order to establish a new way for the utilization of the heterosis of Platycodon grandiflorumgermplasm resources,the floral organ and pollen dispersal, activity of pollen,development of microspores and male gametophytes, seed condition of inbred and hybrid for the male sterile germplasm BY-B1 of white flower P. grandiflorum found in experimental nursery of Agricultural College of Yanbian University were studied. The results showed that the flower appearance of male sterile germplasm BY-B1 of white flower P. grandiflorum was not significantly different from that of normal white flower P.grandiflorum, but anthers of BY-B1 were shrunk and without gloss, and forced pollen with no activities; The male gametophytes of BY-B1 were irregular in shape, without sperm nucleus and vegetative nucleus; Its self-pollination rate was zero and it had 100% of hybrid seed set percentage with normal white flower P. grandiflorum and normal purple flower P. grandiflorum. These results indicated that BY-B1 was male sterile, which laid a foundation for breeding new varieties by using male sterile germplasm of P. grandiflorum.
参考文献/References:
[1]王丹,舒钰,赵学丽,等.药食赏型桔梗的创新开发价值[J].黑龙江农业科学,2018(11):112-115.
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备注/Memo
收稿日期:2022-08-04