标题:Triploid frequency of sexual hybridization and pollen and ovary development in mandarins

作者:Costa S N, Cortez P A, da Hora Almeida L A, Martins F M, Soares Filho W d S, Coelho Filho M A, Gesteira A d S

摘要:This work aimed to ascertain the triploid frequency of sexual hybridization and the pollen and ovary development in Citrus. The Fortune' mandarin (Citrus clementina Hort. ex Tan.xC. tangerina Hort. ex Tan.) accession was selected as female parent for this study based on its reproductive characteristics, mainly the monoembryony and self-incompatibility. The male parents used were the Cravo' (C. reticulata, Blanco) and Dancy' (C. reticulata) mandarins. The pollinations were always manually performed in the morning, and the pollinated flowers were identified for control. During the flowering period, flower samples at different stages of development of the Fortune' variety were collected for histological analysis. Microspore development occurred regularly in the 4-5mm (length) phase of the floral buds, and a bicellular microgametophyte was formed in the floralbudswith5-6 mm in length. The formation of the female gametophyte occurred later, in flower buds with approximately 10mm in length. The hybridizations resulted in 19 triploid plants: five when the Cravo' mandarin was used as the male parent and 14 when Dancy' mandarin was used as the male parent, evidencing the importance of the male genitor also in this process.

文献注录:Costa S N, Cortez P A, da Hora Almeida L A, Martins F M, Soares Filho W d S, Coelho Filho M A, Gesteira A d S. Triploid frequency of sexual hybridization and pollen and ovary development in mandarins [J]. Brazilian Journal of Botany. 2019, 1 : 73-82.

报/刊名: Brazilian Journal of Botany》,发表于2019 / 第 1 期。

文献类型: [J]

页码: 73-82 页 / 共9

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