鲜食葡萄子代评价及无籽与其他农艺性状的相关性

Pub Date : 2023-07-17 DOI:10.1590/0100-29452023225
P. Leão, Jullyanna Nair de Carvalho
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引用次数: 0

摘要

摘要本研究旨在鉴定后代无籽基因型频率较高的葡萄亲本品种,并了解无籽性状与其他果实性状之间的关系。在巴西巴伊亚州Juazeiro连续6个作物季节(2018 - 2021)对葡萄(Vitis vinifera L.)品种间38个杂交组合的200个杂种(F1)进行了评价。按无籽分为完全无籽(1类)、种子痕迹或软籽(2类)和有籽(3类)3类,每类种子平均干物质分别为0 mg、2.3 mg和25.7 mg,对应1类基因型40个(20%)、2类基因型52个(26%)和3类基因型108个(54%)。种间杂交品种“BRS Isis”和“Marroo无籽”在后代中无籽个体的出现频率较高(47.5%)。与果实大小相关的性状(长、径、重)呈高度正相关。研究结果对鲜食葡萄新品种的选育具有重要意义。
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Assessment of table grape progenies and correlation between seedlessness and other agronomic traits
Abstract The aim of the present study was to identify grape parent varieties that lead to greater frequency of seedless genotypes in the progenies and to understand the relationships between the seedless trait and other fruit traits. A group of 200 hybrids (F1) originating from 38 crosses among cultivars of Vitis vinifera L. and interspecific hybrids were evaluated in Juazeiro, Bahia, Brazil, over six consecutive crop seasons (2018 to 2021). The progenies were placed in three classes based on seedlessness: completely seedless (class 1), seed traces or soft seeds (class 2), and with seeds (class 3). The mean dry matter of the seeds in each class was 0 mg, 2.3 mg, and 25.7 mg respectively, which corresponded to 40 genotypes (20%) in class 1, 52 genotypes (26%) in class 2, and 108 (54%) in class 3. The interspecific cross ‘BRS Isis’ and ‘Marroo Seedless’ stood out through favoring high frequency of seedless individuals in the progeny (47.5%). The traits associated with berry size (length, diameter, and weight) had high positive correlations with each other. The results obtained make an important contribution for table grape breeding aiming at the development of new table grape cultivars.
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