摘要
采用离体培养技术对27个枣品种和酸枣的枣吊花蕾量、单花花粉量、花药开裂时间、花粉发芽率以及枣和酸枣单花不同开放阶段的花粉生活力和花粉贮藏特性进行了系统研究。结果表明:(1)不同枣品种和酸枣的枣吊花蕾量、单花花粉量、花粉发芽率存在极大差异,利用数量性状的概率分级体系可将它们分别分为3级;(2)枣和酸枣的花药开裂时间在蕾黄或蕾裂期;(3)从蕾裂到瓣平期的花粉发芽率极显著的高于蕾黄期、雄蕊展平期和雄蕊下垂期;(4)花粉贮藏后发芽率表现为下降—上升—下降的大体趋势。对杂交育种中父母本的选择、花粉采集和去雄的适宜时期也进行了讨论。
Flower number per fruit branch, pollen number, broken time of anther, pollen germination percentage, pollen vigors at different flowering stage and pollen storage in Chinese jujube and wild jujube were systematically studied by means of culture in vitro. The results showed: (1) Flower number per fruit branch, pollen number, pollen germination percentage of Chinese jujube and wild jujube showed a remarkable difference, and were divided into 3 grades by probability grading for quantitative characters; (2) The broken time of anthor of Chinese jujube and wild jujube was in bud yellow stage or bud broken stage; (3) Pollen germination percentage from bud broken to petal flattened was extremely higher than that of bud yellow stage and stamen flattened and wilting stage; (4) Pollen germination percentage after storage showed a tendency of drop-rise-drop. Selection of male parent and female parent, proper time of pollen collection in crossbreeding was also discussed.
出处
《果树学报》
CAS
CSCD
北大核心
2004年第3期224-228,共5页
Journal of Fruit Science
基金
河北农业大学校基金和9816项目资助。
关键词
枣
酸枣
花蕾
花粉
生物学特性
Chinese jujube
Wild jujube
Flower
Pollen
Biological character
