Climate Change: Seed Production and Options for Adaptation

Hampton, J. G.; Conner, A. J.; Boelt, Birte; Chastain, Thomas G.; Rolston, M. P.

doi:10.3390/agriculture6030033

Cited by 41 publications

(22 citation statements)

References 117 publications

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“…Plants in water stress conditions cannot properly use high CO 2 concentration as much as those that are well watered, due to the lower stomatal conductance caused by less guard cell turgescence. Therefore, CO 2 uptake will decrease in these plants 12,60 . The difference in seed production between the resistant and susceptible biotypes was not significant in the water-stressed condition at both CO 2 concentrations.…”

Section: Discussionmentioning

confidence: 99%

The response of glyphosate-resistant and glyphosate-susceptible biotypes of Echinochloa colona to carbon dioxide, soil moisture and glyphosate

Mollaee

Mobli

Chauhan

2020

Sci Rep

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physiological and growth responses of two Australian Echinochloa colona biotypes (glyphosateresistant and susceptible, produced from a single population) to different concentrations of carbon dioxide (co 2) (ambient ~450 ppm and elevated ~750 ppm) and soil moisture (well-watered and waterstressed) were analyzed. Elevated CO 2 and well-watered conditions resulted in E. colona plants with greater biomass, height and numbers of tillers and leaves in both biotypes; however, no significant response was observed for seed production or the amount of photosynthesis pigments with increasing co 2 at both soil moisture levels. In addition, water availability was more influential for growth than co 2 concentration. The mean shoot biomass of the susceptible biotype under elevated CO 2 and wellwatered conditions was significantly greater than the resistant biotype. Although the susceptible biotype showed more vegetative and reproductive growth than the resistant biotype, no significant difference was observed for seed production between the biotypes in the water-stressed condition. In a second experiment, different doses of glyphosate (0, 180, 360, 720 and 1440 g a.e ha −1) were applied to both biotypes grown at two soil moisture levels (well-watered and water-stressed). In the waterstressed condition, glyphosate efficacy was decreased in both biotypes. The resistant biotype in the well-watered condition had only 19% survival at 1440 g ha −1 glyphosate (double the recommended rate), but this value increased in the water-stressed condition by 62%. Our study suggests that future climate change can affect the physiological and growth processes of weeds and their responses to herbicides. Knowledge of their adapting behaviors will be critical to weed management strategies. Climate components such as radiation, temperature and precipitation have a direct impact on the agriculture industry. Therefore, climate change could affect plant biophysiological processes and productivity 1. An increase in the emission of greenhouse gasses (carbon dioxide-CO 2 , methane-CH 4 and nitrous oxide-N 2 O 4), aerosols, temperature and evaporation, as well as a decrease in precipitation will be important factors of future climate change 2. These factors will influence other variables, such as different stresses (drought, salinity, etc), changes in pests' life cycles and soils quality 3-6. The current atmospheric CO 2 concentration, recorded at Mauna Loa Observatory, Hawaii, is 411 ppm 7. Some studies have quantified a difference of 80 ppm in the CO 2 concentration between urban and suburban areas 8,9. According to emission scenarios on climate change as reported by the Intergovernmental Panel on Climate Change (IPCC), CO 2 concentrations are predicted to be in the range between 600 to 1000 ppm at the end of the 21st century 10. Increased levels of CO 2 in C 4 weeds have less beneficial photosynthetic effects compared with C 3 weeds because they already have a pathway for inhibiting photorespiration 11. Different studies assessed that under current temp...

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Section: Discussionmentioning

confidence: 99%

The response of glyphosate-resistant and glyphosate-susceptible biotypes of Echinochloa colona to carbon dioxide, soil moisture and glyphosate

Mollaee

Mobli

Chauhan

2020

Sci Rep

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“…Environmental plant physiological approaches can prove to be beneficial and may finally generate models showing the contribution of different signaling pathways that define "omic" architectural responses to global climatic changes [31]. Studies in the past have recognized an epigenetic contribution related to the adaptation of crops to stressed environments [1,6,9,10,37]. Because seeds are developed in a parental environment, transgenerational epigenetic inheritance provides a mechanism for adaptive parental effects on progeny [38].…”

Section: Discussionmentioning

confidence: 99%

“…Huxman et al [9] found an increased C/N ratio in elevated-CO 2 -developed Bromus rubens L. grass seeds, which resulted in reduced seed quality and seedling performance. Moreover, Hampton et al [10] suggested that elevated CO 2 during seed development might produce greater ethylene, which induces early seed germination in many species. The adverse impacts of high temperatures on seeds during development might be attributed to the limited supply of photosynthetic assimilates [3,11] and physiological damage leading to a loss of seeds' ability to germinate [1].…”

mentioning

confidence: 99%

“…Seed germination studies have evaluated the percentage of germination, the germination rate, and three cardinal temperatures (the minimum, maximum, and optimum) that govern the temperature range across which germination can occur. These germination matrices are also useful in evaluating the impacts of maternal environmental conditions on seed quality traits [1,6,10,19]. Since temperature and CO 2 fluctuations are anticipated influencing crop productivity under natural settings, evaluation of seed germination characteristics at a range of temperature regimes would provide insight into the adaptability of big bluestem and a possible link to maternal environments.Big bluestem (Andropogon gerardii Vitman) is a dominant perennial warm-season C 4 grass species that contribute ≈80% of the biomass in the natural and managed grasslands of the United States [20].…”

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confidence: 99%

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Parental Environmental Effects on Seed Quality and Germination Response to Temperature of Andropogon gerardii

Singh

Singh²,

Matcha

et al. 2019

Agronomy

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Parental environments (PEs) affect seed quality and might alter the re-establishment of big bluestem grass due to impacts on seed germination. An in vitro study was conducted to quantify the temperature response of seed germination and its interaction with the PE in big bluestem. Seeds developed under eight PEs consisting of a combination of four day/night growth temperatures (GTs) (20/12, 25/17, 30/22, and 35/27 • C) and two CO 2 levels (360 and 720 µL L −1 ) were germinated at eight temperatures (germination temperatures (GRTs)) ranging from 10 to 42.5 • C. Quadratic and modified bilinear regressions best described the cardinal temperatures for the estimated maximum seed germination (MSG) and seed germination rate (SGR), respectively. The average MSG and SGR showed differential responses to the PEs and significantly declined above a 35 • C GRT across the PEs. For the SGR, the minimum and optimum temperatures showed significant differences from other treatments but the opposite response to elevated CO 2 , while maximum temperatures significantly declined at high (35/27 • C) and low GTs (20/12 • C). Seed quality parameters, individual seed weight, and C and N contents showed a high correlation (R 2 > 60) with the average percentage of seed germination and the SGR. Thus, high temperatures for both the PEs (>30/22 • C) and GRTs (>30 • C) could significantly reduce germination, affecting the re-establishment of big bluestem.Agronomy 2019, 9, 304 2 of 17 growing temperature strongly affects the rate and duration of the seed filling period, thus affecting seed mass and composition, such as nitrogen and carbon contents [5,6]. Also, elevated CO 2 has been found to decrease seed constituents, such as mineral elements and organic compounds [7]. The current levels of global mean surface air temperature and atmospheric CO 2 are likely to exceed 1.1 to 5.4 • C, depending on representative concentration pathway scenarios, by the end of the 21st century [8]. Huxman et al. [9] found an increased C/N ratio in elevated-CO 2 -developed Bromus rubens L. grass seeds, which resulted in reduced seed quality and seedling performance. Moreover, Hampton et al. [10] suggested that elevated CO 2 during seed development might produce greater ethylene, which induces early seed germination in many species. The adverse impacts of high temperatures on seeds during development might be attributed to the limited supply of photosynthetic assimilates [3,11] and physiological damage leading to a loss of seeds' ability to germinate [1]. Thus, the combined impacts of temperature and elevated CO 2 are likely to alter seed traits essential for initial plant establishment.Seed mass, composition, viability, germination, and seedling vigor are some useful seed quality indicators for the establishment purposes of plants [12,13]. Seed germination characteristics are easy to determine under a laboratory set-up and have been widely exploited for the selection of cultivars with environmental stress tolerance in several crops, including rice [14], cotton [15], s...

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“…growing season. According to Hampton et al (2016), the variation of climate as expressed in the different growing season could affect the seed mass because of the changes of seed growth rate and seed filling duration.…”

Section: Yield and Yield Attributesmentioning

confidence: 99%

The effect of growing season on growth rate, pod partitioning, phenology and yield variations of mungbean varieties

Pratiwi¹,

Rahmianna²

2017

Nusantara Biosci

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Abstract. Pratiwi H, Rahmianna AA. 2016. The effect of growing season on growth rate, pod partitioning, phenology and yield variations of mungbean varieties. Nusantara Bioscience 9: 243-250. The primary objective of mungbean improvement program is the production of high yielding varieties, which is influenced by physiological trait of variety or genotype and environment. The present research aimed to study the effect of growing season on growth rate, pods partitioning, phenology and yield variations of several mungbean varieties. Field experiments were conducted at Muneng Experimental Station of the Indonesian Legume and Tuber Crops Research Institute (ILETRI), Probolinggo District, East Java, Indonesia during rainy season (October to December 2011), and dry season (May to July 2012). A randomized complete block design was employed in the present study consisted of mungbean varieties as treatments in each growing season, and three replicates. The treatments were superior mungbean varieties, i.e. Vima 1, Sriti, Murai, Kutilang and Fore Belu. The observed variables were plant phenology, plant growth rate, seed yield and yield attributes. The results indicated the growing season affected plant growth rate, pod partitioning, phenology and seed yield and yield components with rainy season influenced more parameters of plant growth rate, crop phenology, seed yield and its components as compared to dry season. Conversely, dry season had more effect on pod partitioning coefficient, total dry biomass rate, and seed size. There was significant interaction effect of genotype by growing season on total dry matter and pod growth rates, days to flowering, days to pod maturity, plant height, seed yield, plant population, pod weight, and 1000-seed weight. Seed yield varied among seasons and varieties with the average seed yield in rainy season was 75 to 119% higher than those in dry season except Fore Belu that had the same yield in both seasons.

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Climate Change: Seed Production and Options for Adaptation

Cited by 41 publications

References 117 publications

The response of glyphosate-resistant and glyphosate-susceptible biotypes of Echinochloa colona to carbon dioxide, soil moisture and glyphosate

The response of glyphosate-resistant and glyphosate-susceptible biotypes of Echinochloa colona to carbon dioxide, soil moisture and glyphosate

Parental Environmental Effects on Seed Quality and Germination Response to Temperature of Andropogon gerardii

The effect of growing season on growth rate, pod partitioning, phenology and yield variations of mungbean varieties

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