Clipping and Gibberellin Treatments Promote Germination in Dormant Grape Seeds

IF 1 4区 农林科学 Q3 HORTICULTURE
Bridget Bolt, Anna G. Baloh, Roberta Magnani, M. Nosarzewski, Carlos Rodriguez López, R. Geneve
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引用次数: 0

Abstract

‘Crimson Cabernet’ grape (Vitis vinifera) seeds showed physiological dormancy and germinated at ∼60% after 60 days of chilling stratification. Fresh seeds harvested after physiological maturity and sown without drying failed to germinate after 30 days when sown on agar. In agar-sown fresh seeds cut at the distal seed end or intact seeds treated with gibberellic acid (GA), the seeds germinated at ∼20% after 30 days. The highest germination percentages after 30 days were 63% to 83% in fresh, agar-sown seeds that were cut and treated with GA at 5000 mg⋅L–1 regardless of stratification time. Similar results were seen in seeds allowed to dry before sowing. Seeds cut and treated with GA at 5000 mg⋅L–1 germinated at 79% after 30 days. However, dry seeds sown on germination paper showed lower germination after cutting and GA treatment compared with agar-sown seeds. The highest germination percentages after 30 days in dry, cut seeds on germination paper treated with GA at 2000 and 5000 mg⋅L–1 were 33% and 55%, respectively, compared with agar-sown seeds, which germinated at 76% and 79%, with the same treatments. Results from this study provide a system that reduces the need for chilling stratification for grape seed germination by using partial seedcoat removal and GA treatment.
修剪和赤霉素处理促进葡萄休眠种子发芽
“深红赤霞珠”葡萄(Vitis vinifera)种子表现出生理休眠,经过60天的低温分层后,发芽率为~60%。生理成熟后收获的未经干燥播种的新鲜种子在琼脂上播种30天后未能发芽。在琼脂播种的种子末端切割的新鲜种子或用赤霉酸(GA)处理的完整种子中,30天后种子发芽率为~20%。在新鲜琼脂播种的种子中,30天后的最高发芽率为63%至83%,这些种子被切割并用5000 mg·L–1的GA处理,无论分层时间如何。类似的结果也出现在播种前晾干的种子上。经5000 mg·L–1 GA处理的种子在30天后发芽率为79%。然而,与琼脂播种的种子相比,在发芽纸上播种的干种子在切割和GA处理后表现出较低的发芽率。在2000和5000 mg·L–1 GA处理的发芽纸上,在干燥、切割的种子中30天后的最高发芽率分别为33%和55%,而在相同处理下,琼脂播种的种子发芽率为76%和79%。本研究的结果提供了一种系统,该系统通过使用部分种皮去除和GA处理来减少葡萄种子发芽对冷藏分层的需要。
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来源期刊
Horttechnology
Horttechnology 农林科学-园艺
CiteScore
2.30
自引率
10.00%
发文量
67
审稿时长
3 months
期刊介绍: HortTechnology serves as the primary outreach publication of the American Society for Horticultural Science. Its mission is to provide science-based information to professional horticulturists, practitioners, and educators; promote and encourage an interchange of ideas among scientists, educators, and professionals working in horticulture; and provide an opportunity for peer review of practical horticultural information.
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