Elevated Temperature and CO&lt;sub&gt;2&lt;/sub&gt; Impacts on Pollination, Reproductive Growth, and Yield of Several Globally Important Crops

Boote, Kenneth J.; Allen, L. H.; Prasad, P.V. Vara; Baker, Jeffery T.; Gesch, Russ W.; Snyder, Alison M.; Pan, Deyun; Thomas, Jean M.

doi:10.2480/agrmet.469

Cited by 125 publications

(83 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4). These temperature thresholds are in the range confirmed by other experimental studies (Baker and Allen 1993;Boote et al 2005). Baker and Allen (1993) also indicated decline in rice yield by 10 % for each degree rise in day temperature above 28°C and night temperature above 21°C.…”

Section: Ricesupporting

confidence: 79%

Climate trends and impacts on crop production in the Koshi River basin of Nepal

et al. 2013

View full text Add to dashboard Cite

Understanding crop responses to climate is essential to cope with anticipated changes in temperature and precipitation. We investigated the climate-crop yield relationship and the impact of historical climate on yields of rice, maize and wheat in the Koshi basin of Nepal. The results show significant impact of growing season temperature and precipitation on crop production in the region. Rice, maize and wheat cultivated at altitudes below 1,100, 1,350 and 1,700 m amsl (above mean sea level), respectively, suffer from stress due to higher temperatures particularly during flowering and yield formation stages. Responses of crop yields to a unitary increment in growing season mean temperature vary from -6 to 16 %, -4 to 11 % and -12 to 3 % for rice, maize and wheat, respectively, depending on the location and elevation in the basin. In most parts of the basin, we observe warming trends in growing season mean temperatures of rice, maize and wheat over the last few decades with clear evidence of negative impacts on yields. However, at some high-elevation areas, positive impacts of warming are also observed on rice and maize yields. If the observed trends in temperature continue in future, the impact is likely to be mostly negative on crop production in the basin. However, crop production may gain from the warming at relatively higher altitudes provided other conditions, e.g., water availability, soil fertility, are favorable.

show abstract

Section: Ricesupporting

confidence: 79%

Climate trends and impacts on crop production in the Koshi River basin of Nepal

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Increasing temperature decreased pollen production irrespective of CO 2 [78]. However, there was a negative interaction between temperature and CO 2 on pollen viability, with the decrease in pollen viability in response to increasing temperature being greater at elevated CO 2 than at ambient CO 2 levels [81].…”

Section: Pollenmentioning

confidence: 82%

Climate Change: Seed Production and Options for Adaptation

et al. 2016

View full text Add to dashboard Cite

Food security depends on seed security and the international seed industry must be able to continue to deliver the quantities of quality seed required for this purpose. Abiotic stress resulting from climate change, particularly elevated temperature and water stress, will reduce seed yield and quality. Options for the seed industry to adapt to climate change include moving sites for seed production, changing sowing date, and the development of cultivars with traits which allow them to adapt to climate change conditions. However, the ability of seed growers to make these changes is directly linked to the seed system. In the formal seed system operating in developed countries, implementation will be reasonably straight forward. In the informal system operating in developing countries, the current seed production challenges including supply failing to meet demand and poor seed quality will increase with changing climates.

show abstract

“…Heat stress can impair the overall normal growth and development of the plants causing reduction in their production potential leading to severe yield losses (Hall 2004). High temperature can accelerate the rate of plant development (Gan et al 2004), hasten the reproductive growth, shorten the duration of reproductive growth, affect the flowering and pod filling stages (Hall 2004, Boote et al 2005.…”

Section: Introductionmentioning

confidence: 99%

Proline induces heat tolerance in chickpea (Cicer arietinum L.) plants by protecting vital enzymes of carbon and antioxidative metabolism

Kaushal

Gupta

Bhandhari

et al. 2011

Physiol Mol Biol Plants

163

View full text Add to dashboard Cite

Chickpea is a heat sensitive crop hence its potential yield is considerably reduced under high temperatures exceeding 35°C. In the present study, we evaluated the efficacy of proline in countering the damage caused by heat stress to growth and to enzymes of carbon and antioxidative metabolism in chickpea. The chickpea seeds were raised without (control) and with proline (10 μM) at temperatures of 30/25°C, 35/30°C, 40/35°C and 45/40°C as day/ night (12 h/12 h) in a growth chamber. The shoot and root length at 40/35°C decreased by 46 and 37 %, respectively over control while at 45/40°C, a decrease of 63 and 47 %, respectively over control was observed. In the plants growing in the presence of 10 μM proline at 40/35°C and 45/40°C, the shoot length showed improvement of 32 and 53 %, respectively over untreated plants, while the root growth was improved by 22 and 26 %, respectively. The stress injury (as membrane damage) increased with elevation of temperatures while cellular respiration, chlorophyll content and relative leaf water content reduced as the temperature increased to 45/40°C. The endogenous proline was elevated to 46 μmol g −1 dw at 40/35°C but declined to 19 μmol g −1 dw in plants growing at 45/40°C that was associated with considerable inhibition of growth at this temperature. The oxidative damage measured as malondialdehyde and hydrogen peroxide content increased manifolds in heat stressed plants coupled with inhibition in the activities of enzymatic (superoxide dismutase, catalase, ascorbate peroxidase, glutathione reductase) and levels of non-enzymatic (ascorbic acid, glutathione, proline) antioxidants. The enzymes associated with carbon fixation (RUBISCO), sucrose synthesis (sucrose phosphate synthase) and sucrose hydrolysis (invertase) were strongly inhibited at 45/40°C. The plants growing in the presence of proline accumulated proline up to 63 μmol g −1 dw and showed less injury to membranes, had improved content of chlorophyll and water, especially at 45/40°C. Additionally, the oxidative injury was significantly reduced coupled with elevated levels of enzymatic and non-enzymatic antioxidants. A significant improvement was also noticed in the activities of enzymes of carbon metabolism in proline-treated plants. We report here that proline imparts partial heat tolerance to chickpea's growth by reducing the cellular injury and protection of some vital enzymes related to carbon and oxidative metabolism and exogenous application of proline appears to have a countering effect against elevated high temperatures on chickpea.

show abstract

Elevated Temperature and CO<sub>2</sub> Impacts on Pollination, Reproductive Growth, and Yield of Several Globally Important Crops

Cited by 125 publications

References 17 publications

Climate trends and impacts on crop production in the Koshi River basin of Nepal

Climate trends and impacts on crop production in the Koshi River basin of Nepal

Climate Change: Seed Production and Options for Adaptation

Proline induces heat tolerance in chickpea (Cicer arietinum L.) plants by protecting vital enzymes of carbon and antioxidative metabolism

Contact Info

Product

Resources

About