Responses of root morphology of peanut varieties differing in drought tolerance to water-deficient stress

Hong, 丁红 Ding; Zhimeng, 张智猛 Zhang; Liangxiang, 戴良香 Dai; Wenwu, 宋文武 Song; Tao, 康涛 Kang; Dunwei, 慈敦伟 Ci

doi:10.5846/stxb201206120843

Cited by 8 publications

(2 citation statements)

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“…Similar observations were reported in earlier investigations by Radhouane [44], where the seedling traits were adversely affected under drought conditions due to reduced osmotic potential. Plants' root system plays a significant role in water and nutrient uptake as well as strongly associated with drought tolerance [45]. Several studies suggested that a well-established root system shows a strong drought resistance in plants [46][47][48].…”

Section: Discussionmentioning

confidence: 99%

Changes in Germination and Seedling Traits of Sesame under Simulated Drought

Ahmed¹,

Kheir²,

Mehmood³

et al. 2022

Phyton

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Drought is considered one of the leading abiotic constraints to agricultural crop production globally. Present study was conducted to assess the effects of different drought treatments (viz. Control, 10% PEG, and 20% PEG) on seed germination, germination indices, seedling traits, and drought tolerance indices of sesame. Our results showed that maximum reduction in the studied parameters was observed at higher PEG concentration (i.e., 20% PEG). As compared to control, the drought treatments viz. 10% and 20% PEG decreased the values for germination indices, such as germination percentage, coefficient of variation of germination time, germination index, and seedling vigor index. Similarly, for seedling traits, the values were decreased for root length, shoot length, root shoot ratio, root fresh weight, shoot fresh weight, root dry weight and shoot dry weight under 10% and 20% PEG treatments significantly in comparison with control. Furthermore, relative to control, the values for drought tolerance indices, such as germination drought tolerance index, root length drought tolerance index, shoot length drought tolerance index, total seedling length drought tolerance index, root fresh weight drought tolerance index, shoot fresh weight drought tolerance index, total fresh weight drought tolerance index, root dry weight drought tolerance index, shoot dry weight drought tolerance index and total dry weight drought tolerance index were also reduced under 10% and 20% PEG treatments, respectively. Our results confirms that drought impact on seed germination and seedling traits could be quantified by using different indices which can further help to design drought adaptation and mitigation strategies. Based on these results it can be concluded that germination indices, seedling traits, and drought tolerance indices have great potential to simulate drought stress impacts on different crop traits thus they should be used in all kinds of stress related studies.

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Section: Discussionmentioning

confidence: 99%

Changes in Germination and Seedling Traits of Sesame under Simulated Drought

Ahmed¹,

Kheir²,

Mehmood³

et al. 2022

Phyton

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“…Root morphology determines the ability of crop plants to explore the rhizosphere and efficiently absorb water and nutrients from the soil [29,30]. Root length, root surface area, and root volume are therefore commonly used to evaluate the performance of a root system [31,32]. In this study, root development was significantly impacted by cutting depth.…”

Section: Discussionmentioning

confidence: 99%

Effect of cutting depth during sugarcane harvest on root characteristics and yield

Zhang

Yang

Deng

et al. 2020

Preprint

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Ratooning is an important cultivation practice in sugarcane production around the world, with underground buds on the remaining stalk acting as the source for establishment of a subsequent ratoon crop. However, the optimal depth of cutting during harvest in terms of yield and root growth remains unknown. We carried out a two-year field study to determine the effects of three cutting depths (0, 5 and 10 cm below the surface) ratoon cane root and yield. Results showed that cutting to a depth of 5 cm increased the root fresh weight and root volume by 32-40% and 49-85%, respectively, compared to cutting depths of 0 and 10 cm. Remarkably, cutting to a depth of 5 cm also had a significant effect on the development of fine roots, which is closely linked to cane yield . The effect was particularly noticeable in terms of two root traits, root volume and the surface area of roots with a diameter of 1.0-2.0mm, and root length and the number of root tips in roots with a diameter of 0-0.5mm. As a result, a cutting depth of 5 cm below the surface increased cane yield by 35 and 25% compared to depths of 0 and 10 cm below the surface, respectively. Overall, these findings suggest that a cutting depth of 5 cm is optimal in terms of sugarcane yield, largely due to the enhanced effect on root traits, especially the development of fine roots. These findings will help optimize sugarcane ratoon management and improve the ratoon cycle.

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