Biodiv Sci ›› 2019, Vol. 27 ›› Issue (2): 159-167.DOI: 10.17520/biods.2018317

• Original Papers • Previous Articles     Next Articles

Variation in style length and the effect on reproductive success in Chinese plums (Armeniaca mume)

Wang Xiaoyue1,2,3,Zhu Xinxin3,Yang Juan3,Liu Yunjing3,Tang Xiaoxin1,2,3,*()   

  1. 1 Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, Guizhou Normal University, Guiyang 550025
    2 Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Guiyang 550025
    3 School of Life Sciences, Guizhou Normal University, Guiyang 550025
  • Received:2018-11-27 Accepted:2018-03-05 Online:2019-02-20 Published:2019-04-08
  • Contact: Tang Xiaoxin

Abstract:

Style length might affect gametophyte competition during pollen germination and pollen tube elongation if pollen quality and quantity deposited on stigmas differs with style length. However, it is unknown whether pollen donors from flowers with different style lengths affect sexual reproduction. Field observation noted that style length of Armeniaca mume varied within individuals including those with long-style type, short-style type and male-flower type. Corolla diameters, pistil length, style length, pollen number and pollen volume of long-style type were significantly higher than those of short-style type. Flower longevity and female phase of long-style type were significantly longer than those of short-style type. Pollen germination rates among long-style, short-style and male-flower types were not significantly different. Pollen tube length of the male-flower type was significantly longer than that of long-style and short-style types. Pollen germination rates and pollen tube length of long-style type as pollen recipient were significantly higher than those of short-style type as pollen recipient. Fruit sets did not significantly differ between flowers pollinated by pollen from long-style, short-style and male-flower types with open-pollinated individuals. Fruit sets of long-style type as pollen recipient were significantly higher than those of short-style type as pollen recipient.

Key words: Armeniaca mume, variation in style length, intraplant floral variation, pollen germination rates, pollen tube length, fruit set, pollen siring success