茄科植物茄科植物不同生育期对干旱的敏感性

IF 0.3 Q4 MULTIDISCIPLINARY SCIENCES Momona Ethiopian Journal of Science Pub Date : 2023-11-04 DOI:10.4314/mejs.v15i2.5
Ezekiel Dare OLOWOLAJU, Mutairu Abiodun ADEJUMO, Kehinde Mary POPOOLA, Gideon Olarewaju OKUNLOLA
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引用次数: 0

摘要

选取2019年和2020年两个生长季,对茄茄不同生长阶段的干旱敏感性进行了研究。龙葵是非洲热带和亚热带地区最重要的农作物之一。然而,干旱对作物的生长速度和果实产量有显著影响。然而,龙舌兰在哪个生长阶段容易受到干旱的影响,需要详细的研究和澄清,这是本研究的重点。通过对茎高、枝叶数、叶面积等关键形态性状和叶面积比、净同化率、根冠比、组织含水量(包括地上生物量)、叶片相对含水量、叶绿素色素、渗透产物积累和抗氧化剂等水分相关生理指标的观察和测量,发现不同生长水平下干旱的影响。结果表明:在干旱胁迫下,黑龙花的形态特征、水分生理指标、地上生物量、叶片相对含水量、光合色素、生物碱和黄酮类抗氧化剂等含量在整个生育期均显著降低,且与营养期、开花期和结实期有关。渗透性物质如苯酚和脯氨酸更强。在各生育期中,营养期干旱条件下的龙葵在各测量参数中表现最差,临界值也最低。营养期的龙葵比花期和结实期的龙葵更容易受到干旱的影响。作物在营养阶段对干旱的敏感性会导致生长不良和产量下降。
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Susceptibility of Solanum melongena L/Solanaceae to Drought at Different Growth Stages
The study on the susceptibility of Solanum melongena to drought at different growth stages was conducted in the 2019 and 2020 growing seasons. S. melongena is one of the most relevant agricultural crops in the tropics and subtropical regions of Africa. However, drought has a significant effect on the rate of growth and fruit yield of the crop. However, the growth stage at which S. melongena is vulnerable to the effect of drought needs detailed research and clarification which is the focus of this study. Key morphological traits such as shoot height, number of leaves and branches, and leaf area and water-related physiological indices such as leaf area ratio, net assimilation rate, root shoot ratio, tissue water content including aboveground biomass, leaf relative water content, chlorophyll pigments, osmolytes accumulation, and antioxidants were observed and measured to find the effect of drought at different growth level. The result revealed that the morphological traits, water-related physiological indices, aboveground biomass, leaf relative water content, photosynthetic pigments, antioxidants such as alkaloids and flavonoids of S. melongena were drastically reduced under drought throughout the growth period, associated with vegetative, flowering, and fruiting stage. Osmolytes such as phenol and proline were more enhanced. Across the growth stages, S. melongena subjected to drought at the vegetative stage has exhibited the lowest performance in the measured parameters and has the lowest critical value. S. melongena at the vegetative stage was more vulnerable to drought than the flowering and fruiting stage. Susceptibility to drought of the crop at the vegetative stage can lead to poor growth and yielding.
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来源期刊
Momona Ethiopian Journal of Science
Momona Ethiopian Journal of Science MULTIDISCIPLINARY SCIENCES-
自引率
0.00%
发文量
13
审稿时长
12 weeks
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