黑皮诺的花期、授粉和结果

IF 1.1 4区 农林科学 Q3 HORTICULTURE
Vitis Pub Date : 2004-07-28 DOI:10.5073/VITIS.2004.43.65-68
J. Heazlewood, S. Wilson
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引用次数: 23

摘要

葡萄传粉及结果方面的研究。黑皮诺在南塔斯马尼亚(澳大利亚)一个气候凉爽的葡萄酒产区进行了研究。利用环境扫描电镜(ESEM)记录了柱头表面和花粉粒外观的变化。花萼完整时(柱头脱落前),柱头表面明显肿胀,花粉粒细长、伸长(L/D 35 μm/15 μm)。柱头脱落后柱头呈现较弱的形态,花粉粒呈球形而非细长状(L/D 28 μm/20 μm)。柱头脱落前柱头表面可见花粉,表明花期发生在萼盖就位时。花粉活力试验表明,花粉在这一阶段已经具有活力,并且在花开放几天后仍具有活力。荧光显微照片显示花粉管生长的证据,直到帽落后。用蜡纸袋包住的花,以消除外部花粉,从而只允许自花授粉,结果的百分比等于没有排除外部花粉的花的百分比。结果表明,黑皮诺可以自花授粉,虽然开花在采穗前就开始了,但直到采穗后才开始受精。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Anthesis, pollination and fruitset in Pinot Noir
Aspects of pollination and resulting fruitset in Vitis vinifera cv. Pinot Noir were investigated in a cool climate wine area of Southern Tasmania (Australia). Changes in the appearance of the stigmatic surface and pollen grains were recorded using environmental scanning electron microscopy (ESEM). Flowers with the calyptra intact (before capfall), showed an apparently turgid stigmatic surface and pollen grains present on the surface were slender and elongated (L/D 35 μm/15 μm). Stigmas had a more flaccid appearance after capfall and pollen grains were more spherical and less elongated in shape (L/D 28 μm/20 μm). Pollen was visible on the stigma surface before capfall, indicating that anthesis occurred whilst the calyptra was in place. Pollen viability tests showed that the pollen was already viable at this stage, and it remained viable until after the flower had been open for several days. Fluorescence micrographs showed no evidence of pollen tube growth until after capfall. Flowers covered by waxed paper bags to eliminate external pollen and thus allow only self-pollination, gave a percentage fruitset equal to that of flowers where external pollen was not excluded. Results indicate that Pinot Noir can be self-pollinated, and that while anthesis commences prior to capfall, fertilisation does not proceed until after capfall.
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来源期刊
Vitis
Vitis 农林科学-园艺
CiteScore
1.80
自引率
0.00%
发文量
0
审稿时长
>36 weeks
期刊介绍: VITIS publishes original scientific papers and critical reviews concerning grapevine biology, molecular biology, breeding, plant pathology, oenology and related fields. Research with a focus on pharmacology or post-harvest technology is not suitable for publication in VITIS.
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