Phenology and self-(in)compatibility of some apricot (Prunus armeniaca L.) promising genotypes
- سال انتشار: 1402
- محل انتشار: مجله به نژادی محصولات، دوره: 13، شماره: 2
- کد COI اختصاصی: JR_CBJOU-13-2_001
- زبان مقاله: انگلیسی
- تعداد مشاهده: 255
نویسندگان
Department of Horticulture, Karaj Branch, Islamic Azad University, Karaj, Iran.
Temperate Fruits Research Center, Horticultural Science Research Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran.
Department of Horticulture, Karaj Branch, Islamic Azad University, Karaj, Iran.
Temperate Fruits Research Center, Horticultural Science Research Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran.
Department of Nanotechnology, Agricultural Biotechnology Research Institute of Iran, Karaj, Iran.
چکیده
Self-incompatibility and late spring frosts are the most important limiting factors in Asian apricot (Prunus armeniaca L.) production. Therefore, it is important to develop late-blooming and self-compatible genotypes in apricot breeding programs in order to increase yield, and in some cases to eliminate the need for pollinizers. This study was carried-out to evaluate the phenology and self-(in)compatibility in cv. Shahroudi and twenty-five apricot promising genotypes under Karaj environmental conditions during ۲۰۱۹-۲۰۲۰ growing seasons. Apricot genotypes flowered from early to late March (۳rd to ۲۶th March), and fruits harvested from early to late June. Genotype ۴۹۹ was identified as a late blooming genotype. In vitro pollen germination varied from ۰.۰ to ۷۴.۰%, and showed no correlation with fruit set. Fruit set studies showed ۱۷ genotypes were self-compatible (fruit set of ۵.۲ to ۴۴.۲%). The fluorescent microscopic examinations of the pollen tube growth in the style confirmed ۱۱ genotypes as self-compatible, with at least one pollen tube reaching the ovary. Combining the results of the three primers designed from the first and second Prunus S-RNase introns, ۱۱ S-alleles were identified, among which S۶, Sc and S۲ were the most frequent. Two late-bloom and self-compatible genotypes ۴۴۷ and ۵۳۴ were selected, and several late-bloom or self-compatible genotypes were identified which can be used in future apricot breeding programs.کلیدواژه ها
Apricot, fluorescence microscopy, fruit set, Pollen germination, S-alleleاطلاعات بیشتر در مورد COI
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