The effect of recent climate shifts on optimal sowing windows for wheat in Punjab, India

Sandhu, S. S.; Kaur, Prabhjyot; Gill, K. K.; Vashisth, B. B.

doi:10.2166/wcc.2019.241

Cited by 19 publications

(10 citation statements)

References 19 publications

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“…Based on the weather records of 2006–2015, Sandhu et al . (2020) suggested that the current optimum sowing window for wheat sowing in IGP lies from the last week of October to the first week of November. The delay in sowing from this optimum sowing window by each day can cause a productivity loss of up to 70.80 kg/ha/d.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Triticum durum–Aegilops tauschii derived primary synthetics as potential sources of heat stress tolerance for wheat improvement

Kaur

Chhuneja

Srivastava

et al. 2021

Plant Genet. Resour.

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Addressing the impact of heat stress during flowering and grain filling is critical to sustaining wheat productivity to meet a steadily increasing demand from a rapidly growing world population. Crop wild progenitor species of wheat possess a wealth of genetic diversity for several biotic and abiotic stresses, and morphological traits and can serve as valuable donors. The transfer of useful variation from the diploid progenitor, Aegilops tauschii, to hexaploid wheat can be done through the generation of synthetic hexaploid wheat (SHW). The present study targeted the identification of potential primary SHWs to introduce new genetic variability for heat stress tolerance. Selected SHWs were screened for different yield-associated traits along with three advanced breeding lines and durum parents as checks for assessing terminal heat stress tolerance under timely and late sown conditions for two consecutive seasons. Heat tolerance index based on the number of productive tillers and thousand grain weight indicated that three synthetics, syn9809 (64.32, 78.80), syn14128 (50.30, 78.28) and syn14135 (58.16, 76.03), were able to endure terminal heat stress better than other SHWs as well as checks. One of these synthetics, syn14128, recorded a minimum reduction in thousand kernel weight (21%), chlorophyll content (2.56%), grain width (1.07%) despite minimum grain-filling duration (36.15 d) and has been selected as a potential candidate for introducing the terminal heat stress tolerance in wheat breeding programmes. Breeding efforts using these candidate donors will help develop lines with a higher potential to express the desired heat stress-tolerant phenotype under field conditions.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Triticum durum–Aegilops tauschii derived primary synthetics as potential sources of heat stress tolerance for wheat improvement

Kaur

Chhuneja

Srivastava

et al. 2021

Plant Genet. Resour.

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“…There have been ways to curb the impact of climate change by a number of agronomic practices, such as a shift in sowing dates. The optimum sowing dates for wheat have been identified as October 22-28 in the northeastern part, October 24-30 in the central region, and October 21-27 in the southwestern region of Punjab, India [107]. The yield loss of the crops is lowest when the farmers have adopted sequential cropping systems in sub-Saharan Africa, and adjust the sowing dates according to climate [108].…”

Section: Mitigation and Adaptation To Climate Changementioning

confidence: 99%

Impact of Climate Change on Agriculture and Its Mitigation Strategies: A Review

2021

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Climate change is a global threat to the food and nutritional security of the world. As greenhouse-gas emissions in the atmosphere are increasing, the temperature is also rising due to the greenhouse effect. The average global temperature is increasing continuously and is predicted to rise by 2 °C until 2100, which would cause substantial economic losses at the global level. The concentration of CO2, which accounts for a major proportion of greenhouse gases, is increasing at an alarming rate, and has led to higher growth and plant productivity due to increased photosynthesis, but increased temperature offsets this effect as it leads to increased crop respiration rate and evapotranspiration, higher pest infestation, a shift in weed flora, and reduced crop duration. Climate change also affects the microbial population and their enzymatic activities in soil. This paper reviews the information collected through the literature regarding the issue of climate change, its possible causes, its projection in the near future, its impact on the agriculture sector as an influence on physiological and metabolic activities of plants, and its potential and reported implications for growth and plant productivity, pest infestation, and mitigation strategies and their economic impact.

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“…Simulations models predict that the future hot spots that will see a large reduction in grain yield are in India and Pakistan [ 21 ]. Cropping windows of the wheat-rice rotation will be affected by climate change, as predicted by simulation models, which in turn may reduce wheat yields [ 22 ]. In Pakistan, reduction in wheat phenological phases will be observed due to increased temperatures and thereby reduction in yield [ 23 , 24 ].…”

Section: Effects Of Climate Change and The Development Of Climate Res...mentioning

confidence: 99%

Progress and Prospects of Developing Climate Resilient Wheat in South Asia Using Modern Pre-Breeding Methods

Sukumaran

Krishna

Singh

et al. 2021

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: Developing climate-resilient wheat is a priority for South Asia since the effect of climate change will be pronounced on the major crops that are staple to the region. South Asia must produce >400 million metric tons (MMT) of wheat by 2050 to meet the demand. However, the current average yield <3 t/ha is not sufficient to meet the requirement. In this review, we are addressing how pre-breeding methods in wheat can address the gap in grain yield as well as reduce the bottleneck of genetic diversity. Physiological pre-breeding, which incorporates screening of diverse germplasm from gene banks for physiological and agronomic traits, the strategic crossing of complementary traits, high throughput phenotyping, molecular markers-based generation advancement, genomic prediction, and validation of high-value heat and drought tolerant lines to South Asia, can help to alleviate the drastic effect of climate change on wheat production. There are several gene banks, if utilized well, can play a major role in breeding for climate-resilient wheat. CIMMYT’s wheat physiological pre-breeding has delivered several hundred lines via the Stress Adapted Trait Yield Nursery (SATYN) to the NARS in many South Asian countries; India, Pakistan, Nepal, Bangladesh, Afghanistan, and Iran. Some of these improved germplasms have resulted in varieties for farmer's fields. We conclude the review by pointing out the importance of collaborative interdisciplinary translational research to alleviate the effects of climate change on wheat production in South Asia.

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The effect of recent climate shifts on optimal sowing windows for wheat in Punjab, India

Cited by 19 publications

References 19 publications

Evaluation of Triticum durum–Aegilops tauschii derived primary synthetics as potential sources of heat stress tolerance for wheat improvement

Evaluation of Triticum durum–Aegilops tauschii derived primary synthetics as potential sources of heat stress tolerance for wheat improvement

Impact of Climate Change on Agriculture and Its Mitigation Strategies: A Review

Progress and Prospects of Developing Climate Resilient Wheat in South Asia Using Modern Pre-Breeding Methods

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