乌克兰右岸森林草原条件下杂交茶树品种的耐旱性

S. Vaskivska
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引用次数: 1

摘要

目的。在田间和室内条件下,揭示园群杂交茶玫瑰品种的抗旱性。野外,生物识别,实验室,统计。根据S. S. Pyatnitsky(1961) 6分制对田间植物抗旱性进行了评价;在室内进行试验,根据NAAS园艺研究所统一的方法测定叶片的持水能力、缺水能力、恢复膨胀能力、组织水化能力(Kytaiev et al., 1998,2009)。根据目测,在低水分供应时期,叶膨体没有减少,因此在田间,杂交茶玫瑰的抗旱性在6分制中估计为5分。在实验室中,计算了叶片的水分缺乏率(作为全饱和状态下总含水量的百分比)。根据叶片组织持水能力指标,从最低到最高的顺序,选择了暴露12 h后水分流失程度最高的品种。试验中包括的乌克兰国家科学院M. M. Gryshko NBG收集的所有杂交茶玫瑰品种,在田间条件下都具有相当强的抗旱性。根据44个模型品种叶片抗旱性指标,鉴定出低抗旱性9个(最高达22.30%),中等抗旱性5个(最高达24.37%),高抗旱性和极高抗旱性30个(27.23 ~ 46.47%)。研究结果表明,与水分流失相关的生理过程是一种品种特有的遗传性状。不同地理来源的杂交茶玫瑰品种,抗旱性从中等到最高,可推荐在乌克兰右岸森林草原栽培。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Drought tolerance of hybrid tea rose varieties in the conditions of the Right-Bank Forest-Steppe of Ukraine
Purpose. To reveal drought resistance of hybrid tea rose varieties of garden group in field and laboratory conditions. Methods. Field, biometric, laboratory, statistical. The drought resistance of plants in the field was assessed according to S. S. Pyatnitsky 6-point scale (1961); experiments in the laboratory were to determine the water hol­ding capacity of leaves, their water deficiency, the ability to restore turgor, hydration of tissues according to the unified method of the Institute of Horticulture NAAS (Kytaiev et al., 1998, 2009). Results. According to visual observations in periods with low moisture supply, leaf turgor did not decrease, so in the field, drought resistance of hybrid tea roses was estimated at 5 points on a 6-point scale. In the laboratory, water deficiency in the leaves was calculated (as a percentage of the total water content in the state of full saturation). According to the indicators of the water-holding capacity of leaf tissues, varieties with the level of moisture loss in the exposure after 12 hours from the lowest to the highest, were selected. Conclusions. All varieties of hybrid tea roses from the collection of M. M. Gryshko NBG of NAS of Ukraine, included in the experiment, in field conditions were rather drought-resistant. According to the indicators of drought resistance of leaves from 44 model varieties, 9 with low (up to 22.30%), 5 with medium (up to 24.37%), 30 with high and very high level of moisture loss were identified (27.23–46.47%). Analysis of the research results shows that the physiological processes associated with water loss are a variety-specific, genetically inherited trait. Varieties of hybrid tea roses of diffe­rent geographical origin, which showed the criterion of drought resistance from medium to highest, can be recommended for cultivation in the Right-Bank Forest-Steppe of Ukraine.
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