Drought tolerance in apricot cultivars and breeding forms under the conditions of the southern coast of Crimea

Горіна, В. М.; Korzin, V.; Mesyats, N. V.; Pilkevich, R. A.

doi:10.17660/actahortic.2021.1324.64

Cited by 4 publications

(5 citation statements)

References 7 publications

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“…Ex situ gene pool collections of the Nikitsky Botanical Gardens are kept under standard agricultural practices, and the differences in LWC and WSD between drought-resistant and drought-susceptible cultivars were minimal. Similar results were also obtained for other peach cultivars and hybrids [110], as well as apricot plants [106]. As noted by Sofo et al [109], Mellisho et al [111], M. Rahmati [105], and Hajlaoui et al [108], LWC and WSD well differentiate cultivars and hybrids of the genus Prunus under severe drought or in model experiments with a high degree of tissue dehydration.…”

Section: Discussionsupporting

confidence: 83%

“…So, an attempt to analyze the significance of various indicators associated with drought resistance for peach cultivars was made. One of the main methods for assessing the drought resistance of various peach genotypes is based on the water regime (leaf water content, water deficit, water loss, and ability to restore turgor) [50,105,106]. This method allows mass analysis for hybrids and cultivars.…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Assessment of the Drought-Tolerance Criteria for Screening Peach Cultivars

Tsiupka,

Plugatar

et al. 2023

Horticulturae

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“…В условиях ано-мального недостатка влаги в почве и в воздухе начинаются нарушения в процессе метаболизма растений, что отрицательно сказывается на общей продуктивности (Ryabov, 2011). В связи с вышеизложенным очевидно, что знание механизмов устойчивости к засухе позволит выделить более засухоустойчивые сорта, минимизировать капитальные затраты на орошение и снизить негативное воздействие на продуктивность плодовых растений (Gorina et al, 2017). Поскольку изменения в первичных процессах фотосинтеза, связанные со стрессовым состоянием, появляются задолго до видимых повреждений, анализ параметров индукции флуоресценции хлорофилла является информативным способом диагностики состояния растений (Goltsev et al, 2014).…”

Section: Introductionunclassified

Features of the water regime and photosynthesis in hybrid forms of cherry plum under the dry wind season conditions

Grigoriev,

Pilkevich,

Lukicheva

et al. 2024

Trudy po prikladnoy botanike, genetike i selektsii

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Background. The results of a study on the drought resistance of cherry plum hybrid forms are presented. Water retention capacity of leaves and chlorophyll fluorescence were measured under the simulated conditions close to the dry wind season.Materials and methods. The water regime parameters were studied for five cherry plum genotypes in 2021 and 2022. Leaves of four hybrid forms developed at the Nikita Botanical Gardens and the reference cherry plum hybrid cultivar ‘Rumyanaya Zorka’ (Prunus rossica Erem.) were taken into the experiments. Using the guidelines by G. N. Eremeev and A. I. Lishchuk, a series of experiments on controlled leaf wilt at the air temperature of +27°C and relative humidity of 30% were conducted on cherry plum to assess the functional state of the photosynthetic apparatus during the development of water stress under dry wind conditions. The experiments were carried out in a Binder climate chamber. Chlorophyll fluorescence was measured using a portable Floratest fluorometer. The measurements were based on the parameters of the chlorophyll fluorescence induction curve (CFI) obtained on native leaves. The leaves of cv. ‘Rumyanaya Zorka’ in the state of complete watering served as the reference.Results and discussion. Dependence was identified between chlorophyll fluorescence and moisture content in the leaves of the studied samples. The hybrids were found to respond to drought in different ways. A relatively increased ability to retain moisture during dehydration was observed in form 12/26 whose leaves gave off moisture more slowly and restored their turgor better. It is promising for cultivation in areas with insufficient water supply. Form 99/36 had the lowest potential drought resistance. Forms 99/14 and 9/28 occupied an intermediate position.

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“…Due to the increasing warming rate, air temperatures in recent years have been significantly higher than mid-year values, which has led to a disruption in the differentiation of the flowering buds of fruit crops, and hence a decrease in yields [1,[6][7][8]. Thus, in recent years, the frequency and intensity of this occurrence has increased, and intensive development of diseases and pests has reduced crop yield by up to 50-100% [1,4,[9][10][11]. Despite available publications [12,13], the influence of climate change on the processes of ontogeny of fruit crops in the territory of the South of Russia in the 21st century has been poorly studied.…”

Section: Introductionmentioning

confidence: 99%

Modelling of Climate Change’s Impact on Prunus armeniaca L.’s Flowering Time

et al. 2023

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This study presents the results of the development of numerical models for predicting the timing of apricot flowering, including using experimental data on the emergence of plants from a state of deep dormancy. The best results of approximation of the process of accumulation of the necessary cooling in the autumn–winter period were obtained using the sigmoidal function. Models that take into account the combined effect of temperature and photoperiod on the processes of spring development showed a high accuracy of the process of accumulation of thermal units. Based on the results of testing, two models were selected with an accuracy of 3.0 days for the start of flowering and the absence of a systematic bias, which can be considered a good quality assessment These models describe well the interannual variability of apricot flowering dates and can be used to predict these dates. The discrepancy is no more than 2–4 days in 87–89% of cases. Estimates of the timing of flowering and the end of deep dormancy are very important for increasing the profitability of fruit production in the South of Russia without incurring additional costs, by minimizing the risks associated with irrational crop placement and the selection of varieties without taking into account the specifics of climate change. When constructing a system of protective measures and dates of treatments, it is also necessary to take into account the calendar dates of the shift in the development of plants.

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Drought tolerance in apricot cultivars and breeding forms under the conditions of the southern coast of Crimea

Cited by 4 publications

References 7 publications

Assessment of the Drought-Tolerance Criteria for Screening Peach Cultivars

Assessment of the Drought-Tolerance Criteria for Screening Peach Cultivars

Features of the water regime and photosynthesis in hybrid forms of cherry plum under the dry wind season conditions

Modelling of Climate Change’s Impact on Prunus armeniaca L.’s Flowering Time

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