|
KMID : 0903620010420040439
|
|
Journal of the Korean Society for Horticultural Science
2001 Volume.42 No. 4 p.439 ~ p.443
|
|
|
Genotype for Self - incompatibility in ´ Whangkeumbae ´ Pear (Pyrus pyrifolia Nakai) Cultivar
|
|
조현모/Cho, Hyeon Mo
조광식/강삼석/고갑천/Cho, Kwang Sik/Kang, Sam Seok/Kho, Gab Cheon
|
|
|
Abstract
|
|
|
|
This study was conducted to determine the genotype for self-incompatibility in ´Whangkeumbae´ pear (Pyrus pyrifolia Nakai) cultivar. ´Whangkeumbae´ was compatible with genotype S₁S₂, S₁S₄, S₂S₃, S₄S_5 in 1994 and with genotype S₁S₂, S₁S₄, S₁S_5, S₂S₃, S₄S_5 in 1995. In 1996, the cross-pollinations of ´Whangkeumbae´ with pollen from other cultivars resulted in relatively high rate of fruit set above 78%, except pollen from ´Chojuro´. The fruits from various cross-pollinations were not significantly different in their characteristics and the seed numbers in the fruits ranged from 5.6 to 7.1. Pollens of ´Nijisseiki´ germinated poorly on the stigma of ´Whangkeumbae´ although the pollens had normal germinability on agar medium. Pollen tubes germinated from four other pollen cultivars reached the stylar base of ´Whangkeumbae´ in 72 hours after the pollination. Some pollens of ´Nijisseiki´ and ´Chojuro´ developed deformed pollen tubes during the elongation in the tips in the style of ´Whangkeumbae´, while this was not observed in ´Hayatama´. Pollens of ´Shinseiki´ (known to have S₃S₄ genotype for self-incompatibility) germinated on the stigma surface of ´Whangkeumbae´, but showed arrested pollen tube growth in the style, suggesting that the genotype for self-incompatibility in ´Whangkeumbae´ is S₃S₄. These findings would be conducive in selecting the suitable pollinizers for ´Whangkeumbae´ as well as pear breeding program.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|