The Development of Seed and Floral Organ on the Primary and Secondary Flower Clusters of ‘Kyoho’ Grapevine

ACTA HORTICULTURAE SINICA ›› 2001, Vol. 28 ›› Issue (3): 262-264.

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The Development of Seed and Floral Organ on the Primary and Secondary Flower Clusters of ‘Kyoho’ Grapevine

Hu Jianfang¹, He Haiyang², Zhang Dapeng¹, and Matsui Hiroyuki³

(¹College of Horticultural Sciences , China Agricultural University , Beijing 100094;􀀁 ² Urumchi Environmental Resource Development Laboratory , Urumchi 830002;􀀁³Faculty of Horticulture, Chiba University , Matsudo 271􀀁8510)

Received:1900-01-01 Revised:1900-01-01 Online:2001-06-25 Published:2001-06-25

Abstract

Abstract: The studies of the formation and development of the sexual organs on the primary and secondary flower cluster of 􀀂Kyoho grapevine were conducted, aiming at elucidating the mechanism of the low seed production on the
primary flower clusters. The results showed that the pollen of the florets of the secondary flower clusters was smaller, though the percentage of pollen stained by acetocarmine on florets of both flower clusters was same, the percentage of germination on agar of the secondary flower clusers was higher than that of the primary flower clusters. The result indicated that the pollen quality was not related to flower shatter. The embryo-sac evelopment with function cell in the pistils of the secondary flower clusters was more favorable than that of the primary flower clusters. At anthesis, a large number of abnormal embryo􀀁sac were observed in the ovaries of the primary flower clusters. As a result, at anthesis, a large number of abnormal embryo􀀁sac may suppress fertilization and lead to lower seed.

Key words: Grape, ‘Kyoho’ grapevine, Floral organ, Embryo-sac

CLC Number:

S 663. 1

Hu Jianfang;He Haiyang;Zhang Dapeng;and Matsui Hiroyuki. The Development of Seed and Floral Organ on the Primary and Secondary Flower Clusters of ‘Kyoho’ Grapevine[J]. ACTA HORTICULTURAE SINICA, 2001, 28(3): 262-264.

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The Development of Seed and Floral Organ on the Primary and Secondary Flower Clusters of ‘Kyoho’ Grapevine

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