Productivity, persistence and traits related to drought tolerance in smooth bromegrass

Saeidnia, Fatemeh; Majidi, Mohammad Mahdi; Mirlohi, Aghafakhr; Manafi, Marziye

doi:10.1111/pbr.12466

Cited by 25 publications

(36 citation statements)

References 56 publications

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“…Hereafter, the term of “recurrent drought stress” refers to the drought stress applied during 2013–2015 and the term of “prolonged drought stress” refers to the drought stress applied during June and July of 2016. Persistence (PER) of genotypes was calculated as the difference of dry matter yield of first cut at the fourth year (2016) from dry matter yield of first cut at second year (2014; Saeidnia et al., 2017):

PER = DMY 1 (2016) ‐ DMY 1 (2014) .

…”

Section: Methodsmentioning

confidence: 99%

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Genotypic‐specific responses caused by prolonged drought stress in smooth bromegrass (Bromus inermis): Interactions with mating systems

et al. 2020

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The consequences of recurrent drought events compared with a single drought, and drought's interaction with deliberate selfing compared with open‐pollination on postdrought recovery and persistence of smooth bromegrass, are not clear. This research was conducted to investigate the effects of recurrent drought stresses compared with a single drought on stress response, poststress recovery and persistence of full‐sib and half‐sib progenies of smooth bromegrass. During this study, 25 selfed (S1) and 25 open‐pollinated (OP) progenies of smooth bromegrass created in 2012 were evaluated in the field under normal and recurrent drought stress during 2013–2016. After the first harvest of above‐ground biomass in 2016, irrigation was withheld in both environments for 2 months; plants were subsequently re‐watered and evaluated. Recurrent drought stress changed the relationships between different traits. Moreover, prolonged drought stress resulted in increased plant productivity (recovery aerial biomass; RABI) of S1 and OP populations in recurrent drought stress compared with normal environment. Mandatory selfing increased persistence of smooth bromegrass genotypes but did not affect recovery after prolonged drought stress. Results revealed that, selecting among S1 families would be more effective than OP ones.

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PER = DMY 1 (2016) ‐ DMY 1 (2014) .

…”

Section: Methodsmentioning

confidence: 99%

“…Given the advantages that perennial forage grasses such as smooth bromegrass ( Bromus inermis Leyss.) have in the arenas of both agricultural and forage sustainability for animal farming, they can be an effective substitute for annuals under drought conditions (Saeidnia, Majidi, Mirlohi, & Manafi, 2017).…”

Section: Introductionmentioning

confidence: 99%

Genotypic‐specific responses caused by prolonged drought stress in smooth bromegrass (Bromus inermis): Interactions with mating systems

et al. 2020

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“…Persistence is defined as the ability of plant to retain productivity over years (Annicchiarico et al, 2011) and is dependent on the ability of the plant to maintain a viable crown at the soil surface from which growth regenerates. In spaced plant material, the difference in performance over years can give an idea of persistence (Saeidnia, Majidi, Mirlohi, & Manafi, 2017b). Water deficit is a primary abiotic constraint modifying plant productivity worldwide (Hu & Xiong, 2014;Lobell et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Influence of water deficit and defoliation managements on post‐drought recovery and persistence of smooth bromegrass

et al. 2020

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In arid and semiarid regions, successful recovery from drought may be of more economic significance than plant productivity during a dry season. This research was conducted to investigate the effects of pre-drought irrigation and defoliation managements (seed and forage managements) on post-drought recovery of diverse smooth bromegrass (Bromus inermis Leyss.) genotypes, and to identify growth traits associated with persistence and recovery as indices for selecting superior genotypes. Thirty-six genotypes were field evaluated in two separate experiments of seed and forage managements during 2013-2015 under well-watered and deficit irrigation regimes. In the fourth year (2016), irrigation was withheld from both moisture regimes for two months (almost complete senescence) and then plants were re-watered to find the effect of prolonged drought stress on post-drought recovery. Pre-drought irrigation increased persistence of genotypes relative to the well-watered treatment in the seed management experiment. In the seed management trial, genotypes had greater recovery under deficit irrigation when compared to forage management counterpart. There was no significant difference between seed and forage management experiments under the well-watered regime in this respect. Positive correlations were observed between recovery after prolonged drought and total aerial biomass, persistence, and winter growth vigor under both irrigation regimes. Superior genotypes were identified as having more productivity, better recovery, higher persistence, and drought tolerance.

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“…It is known that hybrids can be a valuable source of variability for increasing resistance to abiotic and biotic stresses (Perlikowski et al 2014(Perlikowski et al , 2019. According to Saeidnia et al (2017), conducting research on the tolerance of crops to water stress based on the reduction of dry matter yield under drought conditions compared to optimal conditions is of great diagnostic value, especially in the context of breeding programs.…”

Section: Introductionmentioning

confidence: 99%

Prolonged drought stress induced changes in yield and physiological processes of Trifolium repens and Festulolium braunii

Staniak¹,

Bojarszczuk²,

Kraska³

et al. 2020

Biologia plant.

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Water deficit is one of the main environmental factors, and the recognition of plant response to drought stress seems to be crucial for the yield improvement of the important crops. The aim of the study was to investigate the effect of prolonged drought stress on dry matter yield, gas exchange parameters, and relative chlorophyll content in the leaves of Festulolium braunii and Trifolium repens grown in pure stands and in mixture. In the pot experiment, different levels of soil moisture (well-watered conditions and drought stress) and of cultivation method (pure stand and mixture) have been applied. The study has shown that all measured parameters were affected by drought stress. Dry mass yield, net photosynthetic rate (PN), transpiration rate (E), and stomatal conductance were significantly lower under drought stress than under well-watered conditions in all treatment types. T. repens showed the strongest response to stress, whereas F. braunii the weakest when both those species were grown in the pure stand. Under drought conditions, the yield of the mixture was similar to that of F. braunii cultivated in the pure stand, and significantly higher than that of T. repens cultivated in the pure stand. It was also found that under the stress, PN and E of both species in the the mixture was higher than in the pure stand. The highest water use efficiency was observed in F. braunii grown in the mixture. Our research shows, that in regions with limited rainfall, T. repens is more useful for growing in a mixture with F. braunii, than in the pure stand.

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Productivity, persistence and traits related to drought tolerance in smooth bromegrass

Cited by 25 publications

References 56 publications

Genotypic‐specific responses caused by prolonged drought stress in smooth bromegrass (Bromus inermis): Interactions with mating systems

Genotypic‐specific responses caused by prolonged drought stress in smooth bromegrass (Bromus inermis): Interactions with mating systems

Influence of water deficit and defoliation managements on post‐drought recovery and persistence of smooth bromegrass

Prolonged drought stress induced changes in yield and physiological processes of Trifolium repens and Festulolium braunii

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