Application of Morphological and Physiological Markers for Study of Drought Tolerance in Lilium Varieties

Li, Xiang; Jia, Wei; Zheng, Jie; Ma, Lei; Duan, Qing; Du, Wei; GuangFen, Cui; Wang, Xiangning; Wang, Jihua

doi:10.3390/horticulturae8090786

Cited by 5 publications

(4 citation statements)

References 57 publications

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“…Leaves are modified to reduce the transpiration rate and maximize the available water resource. Thick cuticle, high P/S ratio (palisade tissue/spongy tissue) with a thick palisade layer leading to a high rate of photosynthesis and less energy spent to transport CO 2 between stomata and chloroplast and low specific leaf area, the ratio of leaf area to dry weight, with the adaptive ability of plants in resource scarce environments are considered to be indicators of drought tolerance [50,51]. The development of trichomes and the ratio of trichome to stomata are positively correlated to water deficiency [52].…”

Section: The Mechanisms Of Abiotic Stress Tolerance In Plantsmentioning

confidence: 99%

Creating Climate-Resilient Crops by Increasing Drought, Heat, and Salt Tolerance

Sugumar,

Shen,

Smith

et al. 2024

Plants

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Over the years, the changes in the agriculture industry have been inevitable, considering the need to feed the growing population. As the world population continues to grow, food security has become challenged. Resources such as arable land and freshwater have become scarce due to quick urbanization in developing countries and anthropologic activities; expanding agricultural production areas is not an option. Environmental and climatic factors such as drought, heat, and salt stresses pose serious threats to food production worldwide. Therefore, the need to utilize the remaining arable land and water effectively and efficiently and to maximize the yield to support the increasing food demand has become crucial. It is essential to develop climate-resilient crops that will outperform traditional crops under any abiotic stress conditions such as heat, drought, and salt, as well as these stresses in any combinations. This review provides a glimpse of how plant breeding in agriculture has evolved to overcome the harsh environmental conditions and what the future would be like.

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Section: The Mechanisms Of Abiotic Stress Tolerance In Plantsmentioning

confidence: 99%

Creating Climate-Resilient Crops by Increasing Drought, Heat, and Salt Tolerance

Sugumar,

Shen,

Smith

et al. 2024

Plants

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“…The conventional method for selecting drought-tolerant cultivars has entailed cultivating plants in water-stressed settings and comparing their growth and reproductive parameters to those recorded in plants in non-stressed environments. However, more recently, plant breeding efforts have switched to alternate methods of screening for stress tolerance, including the use of physiological [14][15][16][17] and biochemical markers [10,[18][19][20][21]. Amongst the biochemical indicators of stress, the most widely used are those related to photosynthetic pigments, osmolytes, oxidative stress markers and antioxidants [4,22,23].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Drought Responses in Two Tropaeolum Species Used in Landscaping through Morphological and Biochemical Markers

Mircea

Calone²,

Shakya

et al. 2023

Life

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One of the most important challenges horticultural crops confront is drought, particularly in regions such as the Mediterranean basin, where water supplies are usually limited and will become even scarcer due to global warming. Therefore, the selection and diversification of stress-tolerant cultivars are becoming priorities of contemporary ornamental horticulture. This study explored the impact of water stress on two Tropaeolum species frequently used in landscaping. Young plants obtained by seed germination were exposed to moderate water stress (half the water used in the control treatments) and severe water stress (complete withholding of irrigation) for 30 days. Plant responses to these stress treatments were evaluated by determining several growth parameters and biochemical stress markers. The latter were analysed by spectrophotometric methods and, in some cases, by non-destructive measurements using an optical sensor. The statistical analysis of the results indicated that although the stress responses were similar in these two closely related species, T. minus performed better under control and intermediate water stress conditions but was more susceptible to severe water stress. On the other hand, T. majus had a stronger potential for adaptation to soil water scarcity, which may be associated with its reported expansion and naturalisation in different regions of the world. The variations in proline and malondialdehyde concentrations were the most reliable biochemical indicators of water stress effects. The present study also showed a close relationship between the patterns of variation of flavonoid and chlorophyll contents obtained by sensor-based and spectrophotometric methods.

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“…In the literature, there are a great number of different criteria and indicators for evaluating drought tolerance in fruit plants. Among them, chlorophyll content and the chlorophyll stability index [19], photosynthetic activity in leaves (maximum and effective quantum yield of PSII, variable fluorescence, non-photochemical quenching) [20], leaf water regime indicators (LWC-total leaf water content, WSD-water saturation deficit and WL-water loss) [21][22][23][24], enzymatic activity [24], morphometric features (leaf length and width, leaf surface area, specific weight and specific area, leaf lamina density) [25,26], and anatomical indices (thickness of cuticle, epidermis, palisade and spongy parenchyma, palisade/spongy tissue ratio) [27][28][29] are the most used. This diversity of coefficients and characteristics associated with the drought tolerance of plants certainly allows the most objective estimation of the genotype, but it is rather labor-consuming.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Drought-Tolerance Criteria for Screening Peach Cultivars

Tsiupka,

Plugatar

et al. 2023

Horticulturae

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The article presents an analysis of the artificial dehydration effect of peach leaf tissues, simulating natural drought, on various physiological, morphological, and anatomical parameters described in the literature, associated with the trait of drought resistance. An investigation aimed to identify the most informative criteria for peach drought resistance which correlate with water loss during dehydration. The results present an assessment of the amount of water loss in 60 peach cultivars selected from different geographical areas and having different genetic origins. Four contrasting genotypes were identified, based on the results of the cluster analysis performed on the cultivar’s water regime. The influence of water regime parameters (leaf water content, water saturation deficit, dynamic of water loss), the morphological and anatomical structure of the leaf, the content of photosynthetic pigments, and the activity of the photosynthetic apparatus on drought resistance were investigated for selected peach cultivars. It was revealed that the most informative criteria for assessing drought resistance were dry and fresh leaf weight, leaf blade length, leaf width, and area (among morphometric parameters); stomatal pore length, stomata density, adaxial and abaxial epidermis thickness, and adaxial cuticle thickness (among anatomical parameters); and Fv/Fm—maximum photochemical quantum yield of PSII, Y(NO)—quantum yield of unregulated non-photochemical light energy dissipation in PS II and Y(NPQ)—controlled quantum losses (among indicators of photosynthetic activity).

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Application of Morphological and Physiological Markers for Study of Drought Tolerance in Lilium Varieties

Cited by 5 publications

References 57 publications

Creating Climate-Resilient Crops by Increasing Drought, Heat, and Salt Tolerance

Creating Climate-Resilient Crops by Increasing Drought, Heat, and Salt Tolerance

Evaluation of Drought Responses in Two Tropaeolum Species Used in Landscaping through Morphological and Biochemical Markers

Assessment of the Drought-Tolerance Criteria for Screening Peach Cultivars

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