Adaptability and Phenotypic Variation of Agronomic Traits in Mungbean Core Collection under Different Environments in China

Wang, Lixia; Xuzhen, Cheng; Wang, Suhua; Xu, Zhu; Liu, Zhenxing

doi:10.3724/sp.j.1006.2014.00739

Cited by 5 publications

(4 citation statements)

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“…In this study, by observing the external morphology of 16 Poa annua germplasms that were subjected to combined cold and drought stress for 24 h, we found that the ‘HZ’ germplasm showed less severe damage symptoms than the other germplasms, and the ‘ZQ’ germplasm showed the most severe damage symptoms. The richer the variation in plant traits is, the more the plants can improve their adaptability to different environments 29 , 30 . Our study found that under combined cold and drought stress, the coefficient of variation of Poa annua varied from 8.26% to 74.97%, with an average coefficient of variation of 32.09%, which was much greater than 10% 31 .…”

Section: Discussionmentioning

confidence: 99%

Effects of combined extreme cold and drought stress on growth, photosynthesis, and physiological characteristics of cool-season grasses

Li,

Bai,

Ran

et al. 2024

Sci Rep

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Abiotic stress is an important factor affecting turf establishment and limiting the sustainability of the turf industry. To alleviate the effects of combined cold and drought stress in cold- and drought-prone regions, it is essential to select and introduce turfgrass germplasms that are suitable for these conditions for successful turf establishment. Thus, we evaluated the effects of combined extreme cold and drought stress on the morphological, plant leaf functional, photosynthetic, and physiological and biochemical traits of 16 wild annual bluegrass (Poa annua) germplasms. We found that there were significant differences (P < 0.05) among different provenances, combined cold and drought stress, and the main interaction factors. Combined cold and drought stress altered the morphological characteristics of the 16 germplasms to varying degrees. Furthermore, combined cold and drought stress significantly reduced the net photosynthetic rate (Pn), stomatal conductance (gs), transpiration rate (Tr), instantaneous water use efficiency (WUE), chlorophyll content, chlorophyll fluorescence parameters, accumulated intercellular CO2 concentration (Ci), and relative electrical conductivity (REC) and malondialdehyde (MDA), proline (Pro), soluble protein (SP), soluble sugar (SS), superoxide anion (O2.-), hydrogen peroxide (H2O2), and hydroxyl radical (·OH) and other active oxygen, and increased the superoxide dismutase activity (SOD), peroxidase activity (POD), catalase activity (CAT), ascorbate peroxidase activity (APX) and glutathione reductase (GR) activities. Comprehensive evaluation using principal component analysis (PCA), membership function analysis, and clustered heatmaps indicated that the ‘HZ’ germplasm had stronger combined cold and drought tolerance, whereas the ‘ZQ’ germplasm was more sensitive to combined cold and drought, which was roughly consistent with the order of morphological damage symptoms. Therefore, it is recommended to use the ‘HZ’ germplasm for planting projects in cold- and drought-prone areas, while the ‘ZQ’ germplasm is more suitable for use under warmer and non-water-deficient conditions.

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Section: Discussionmentioning

confidence: 99%

Effects of combined extreme cold and drought stress on growth, photosynthesis, and physiological characteristics of cool-season grasses

Li,

Bai,

Ran

et al. 2024

Sci Rep

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“…Plant variation diversity is the result of the combined effects of genetic adaptation and environmental heterogeneity. The richer the variation of plant traits, the more they can improve their adaptability to different environments [46,47]. Our study found that under combined drought and low-temperature stress, the coefficient of variation of Poa annua varied from 8.75% to 78.40%, with an average coefficient of variation of 22.60%, which was much greater than 10% [48], indicating that the leaf traits were rich in variation, which was conducive to the screening of combined drought and low-temperature resistant materials.…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic and Physiological Responses to Combined Drought and Low–Temperature Stress in Poa annua Seedlings from Different Provenances

Li,

Bai,

Ran

et al. 2023

Agriculture

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Combined drought and low–temperature stress is a crucial factor affecting turfgrass establishment and limiting the sustainability of the turfgrass industry in drought– and cold–prone regions. In this context, we evaluated the effects of regular watering (the soil water content was 80% of the maximum water–holding capacity of the field) at room temperature (25 °C) and combined drought (the soil water content was 30% of the maximum water–holding capacity of the field) and low–temperature (0 °C) stress on the morphology, photosynthesis, and physiology of wild Poa annua seedlings from different provenances (‘PA’, ‘WY’, ‘NX’ and ‘YC’). Results indicated that the combined drought and low–temperature stress changed the morphological and growth indicators of seedlings in four provenances to different extents. Moreover, combined drought and low–temperature stress reduced the net photosynthetic rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), water use efficiency (WUE), and chlorophyll content in seedlings from four provenances. However, intertemporal CO2 concentration (Ci), relative electrical conductivity (REC), the contents of malondialdehyde (MDA), proline (Pro), soluble sugars (SS), the superoxide anion (O2•−) production rate, the contents of hydrogen peroxide (H2O2) and hydroxyl radical (·OH), the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) were all increased. The increase in ‘PA’ was much greater than that in ‘NX.’ The comprehensive evaluation results showed that the order of combined drought and low–temperature resistance of seedlings from the four provenances was ‘PA’ > ‘YC’ > ‘WY’ > ‘NX’, which corresponded to the order of the morphological damage symptoms. In conclusion, ‘PA’ may maintain stronger combined drought and low–temperature resistance by improving the cellular water absorption and retention capacity, enhancing the function of the antioxidant defense system, and maintaining the integrity of the cell membrane, which is a crucial germplasm resource for breeding combined drought and low–temperature resistance in Poa annua.

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“…Triticale has also been grown in this region because of its high yield and quality as well as its lodging and disease resistance ( Jun et al, 2022 ). Recent research indicated that triticale and oat have a DM yield (DMY) of 16.26 and 15.8 t/ha, respectively, and a crude protein (CP) content of 11.08% and 10.7%, respectively ( Wang et al, 2020 ; Zhao et al, 2018 ). In terms of the rye cultivated on the Qinghai–Tibet Plateau, it has a hay yield of 10.87 t/ha, a CP content of 10.18%, and a DM digestibility (DMD) of 58.83% ( Zhao et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Effects of harvest stages and lactic acid bacteria additives on the nutritional quality of silage derived from triticale, rye, and oat on the Qinghai-Tibet Plateau

Ma¹,

Dai²,

Liu³

et al. 2023

PeerJ

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Background Triticale (×Triticosecale Wittmack L.), rye (Secale cereale L.), and oat (Avena sativa L.) are the main forage crops on the Qinghai–Tibet Plateau, but there has been relatively little research on the silage produced from these three species. Methods Plants were harvested at the heading, flowering, grouting, milky, and dough stages and then used to produce silage with and without additives (Sila-Max and Sila-Mix). The nutritional quality of the resulting silages was analyzed. Results Triticale was revealed to be more suitable than oat or rye for producing silage on the Qinghai–Tibet Plateau. On the basis of the dry matter yield (DMY), triticale and rye should be harvested at the milky stage to optimize silage quality, whereas oat should be harvested at the dough stage. The lactic acid bacteria additives Sila-Max and Sila-Mix had no significant effect on the nutritional quality of the three silages regardless of when the samples were harvested. Overall, triticale produced higher quality silage than oat or rye. More specifically, triticale variety ‘Gannong No.2’ harvested at the milky stage is ideal for silage production.

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Adaptability and Phenotypic Variation of Agronomic Traits in Mungbean Core Collection under Different Environments in China

Cited by 5 publications

References 0 publications

Effects of combined extreme cold and drought stress on growth, photosynthesis, and physiological characteristics of cool-season grasses

Effects of combined extreme cold and drought stress on growth, photosynthesis, and physiological characteristics of cool-season grasses

Photosynthetic and Physiological Responses to Combined Drought and Low–Temperature Stress in Poa annua Seedlings from Different Provenances

Effects of harvest stages and lactic acid bacteria additives on the nutritional quality of silage derived from triticale, rye, and oat on the Qinghai-Tibet Plateau

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