不同水分条件下黑胡椒的形态生理变化

IF 1.2 4区 农林科学 Q3 AGRONOMY
G. C. Teles, L. O. Medici, D. C. Valença, E. S. D. Cruz, D. F. Carvalho
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引用次数: 0

摘要

胡椒的起源和驯化中心位于高降雨地区。但当种植在降雨不规律或不足的地区时,灌溉就变得至关重要。研究了不同灌溉水平对黑胡椒植株生理和生长特性的影响。Bragantina。试验于2019年4月至2020年5月进行,采用自动激活灌溉。我们使用不同流速的喷射器,分别施加作物需水量的100、81、62和42%。评价参数包括主茎长(MSL)、茎粗(SD)、叶片数(NL)、叶面积(LA)、叶绿素含量、叶绿素-a荧光和一些光合参数。处理显著影响MSL和NL (p < 0.05, f检验)。对照处理植株的MSL(65.8%)和NL(123%)高于最小灌量处理(p < 0.05, f检验)。然而,这些处理对SD没有显著影响。叶绿素b含量在120和180 d时分别下降了26%和22%。水分亏缺对光合参数FV/FM、ABS/RC和DI0/RC的影响。我们的研究结果表明,黑胡椒对水分亏缺的敏感性,有助于该作物的适当管理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Morphophysiological changes in black pepper under different water supplies
The center of origin and domestication of Piper nigrum L. are in high rainfall regions. But when grown in regions with irregular or insufficient rainfall, irrigation becomes essential. This study evaluated the impact of irrigation levels on the physiological and growth characteristics of black pepper plants, cv. Bragantina. It was carried out from April 2019 to May 2020, using automatic activation irrigation. We used emitters with different flow rates to apply water depths corresponding to 100, 81, 62, and 42% of the crop water requirement. The parameters evaluated comprised main stem length (MSL), stem diameter (SD), number of leaves (NL), leaf area (LA), chlorophyll contents, chlorophyll-a fluorescence, and some photosynthetic parameters. The treatments significantly influenced (p < 0.05, F-test) MSL and NL. Plants submitted to the control treatment showed MSL (65.8%) and NL (123%) greater than those irrigated with the smallest volume (p < 0.05, F-test). However, the treatments had no significant effect on SD. Moreover, chlorophyll b levels decreased by 26% and chlorophyll a/b ratio increased by 22% at 120 and 180 DAT, respectively. Some photosynthetic parameters such as FV/FM, ABS/RC, and DI0/RC were affected by water deficit at 120 DAT. Our results suggest the sensitivity of black peppers to water deficit and contribute to the proper management of this crop.
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来源期刊
Acta Scientiarum. Agronomy.
Acta Scientiarum. Agronomy. Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
2.40
自引率
0.00%
发文量
45
审稿时长
>12 weeks
期刊介绍: The journal publishes original articles in all areas of Agronomy, including soil sciences, agricultural entomology, soil fertility and manuring, soil physics, physiology of cultivated plants, phytopathology, phyto-health, phytotechny, genesis, morphology and soil classification, management and conservation of soil, integrated management of plant pests, vegetal improvement, agricultural microbiology, agricultural parasitology, production and processing of seeds.
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