摘要
以胚轻度败育的冬枣和胚高度败育的梨枣为试材,用高效液相色谱法对其果肉和种子的内源激素进行了测定。结果表明,梨枣果肉在坐果后20d以内的玉米素(Z)含量及坐果后30d以内的GA3、IAA含量皆高于冬枣果肉,ABA出现较冬枣早40d,冬枣种子Z含量在坐果后20d达到最高值,远高于冬枣果肉;GA3一直保持很低水平。冬枣种子IAA在坐果后40d达到最高峰,以后一直保持较高水平,远高于冬枣果肉;IAA/GA3、IAA/Z值直至坐果后55d、40d保持低水平,但之后急剧提高。梨枣坐果后10d,无仁果肉的3种生长类激素含量皆高于有仁果。幼果果肉中高水平的生长类激素不利于胚的正常发育,而幼胚中高水平的Z和IAA有利于胚的正常发育。
Ziziphus jujuba cv. Dongzao, light embryo abortion cultivar and Ziziphus jujuba cv. Lizao, high embryo abortion cultivars were employed to determine endogenous hormone of pulp and seed by using HPLC. The results showed that: content of zeatin(Z) in the pulp of Lizao within 20 days after fruit set was higher than that in the pulp of Dongzao, so did the content of GA 3 and IAA within 30 days after fruit set; ABA in the pulp of Lizao was found earlier than that of Dongzao. In Dongzao, Z content of seed was much higher than pulp which reached peak 20 d after fruit set, GA 3 content of Dongzao seed kept low all along. IAA content of Dongzao seed reached peak 40 d after fruit set, and kept high level after that, much higher than pulp of Dongzao; IAA/GA 3, IAA/Z kept low within 55,40 days separately after fruit set, but raised very fast after that. Three growth hormones in the pulp of seedless fruit were higher than seeded fruit. Z, GA 3 and IAA content in the pulp of seedless fruit were higher than seeded fruit in Lizao 10 d after fruit set. The high Z, GA 3 and IAA level in pulp were unfavorable for embryo development, but high Z and IAA level in embryo were favorable for embryo development.
出处
《园艺学报》
CAS
CSCD
北大核心
2004年第6期800-802,共3页
Acta Horticulturae Sinica
基金
国家自然科学基金资助项目(30170652)
河北省自然科学基金资助项目(302300)
关键词
枣
冬枣
梨枣
果实发育
内源激素
胚败育
Chinese jujube
Dongzao
Lizao
Fruit growth
Pulp
Seed
Endogenous hormone
Embryo abortion
