Stakeholder perception of wheat production constraints, capacity building needs, and research partnerships in developing countries

Kosina, Petr; Reynolds, M.P.; Dixon, John; Joshi, Arun Kumar

doi:10.1007/s10681-007-9529-9

Cited by 81 publications

(55 citation statements)

References 6 publications

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“…The terminal heat stress at anthesis and grain filling stages accelerate maturity and significantly reduce grain size, weight and yield (Rane et al, 2000;Lane et al, 2007;Kosina et al, 2007). Physiological responses of wheat crop to terminal heat stress have been found to effectively determine genotype tolerance or susceptibility (Almeselmani et al, 2000).…”

Section: Issn: 2319-7706 Volume 7 Number 07 (2018)mentioning

confidence: 99%

Developing a Selection Criterion for Terminal Heat Tolerance in Bread Wheat Based on Various Mopho-Physiological Traits

Sharma¹,

Jaiswal²,

Singh³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Section: Issn: 2319-7706 Volume 7 Number 07 (2018)mentioning

confidence: 99%

Developing a Selection Criterion for Terminal Heat Tolerance in Bread Wheat Based on Various Mopho-Physiological Traits

Sharma¹,

Jaiswal²,

Singh³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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“…The huge yield reduction and quality loss of wheat crop due to terminal heat stress particularly at the time of grain filling is receiving great concern to develop thermotolerance wheat cultivars. [6][7][8] Physiological responses of wheat crop to terminal heat stress have been found to effectively determine genotype resistance or susceptibility. 9 The terminal heat stress was at anthesis and grain filling stages accelerate maturity and significantly reduce grain size, weight and yield.…”

Section: Introductionmentioning

confidence: 99%

Comparative physiological response of wheat genotypes under terminal heat stress

Dhyani

Ansari

Rao

et al. 2013

Plant Signaling & Behavior

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Keywords: heat stress, malondialdehyde, proline, superoxide dismutase, timely and late sown condition, wheat genotypes thermostability, canopy function, stable green habit, better mobilization rate of food reserve and other technical or physiological parameters might be helpful to overcome yield loss under terminal heat stress. 12 In vitro studies of wheat plants in combination with genetic manipulation to develop heat tolerant wheat are of limited success. Therefore, the complex physiological-genetic approach could be useful to acquire heat tolerance in wheat to minimize the farmer's risk for reduced yield and low quality grain product. Here, Physiological evaluation of wheat genotypes was performed under timely and late sown condition. Results Estimation of chlorophyll index (SPAD-values), leaf area index (LAI) and proline content. Chlorophyll content (SPAD-values)of wheat genotypes viz., DBW-140, RAJ-3765, PBW-574, K-0-307 and HS-240 under timely and late sown was calculated after 30, 50, 70, 90 and 110 d. It was found that SPAD-values affected under timely and late sown conditions were 41.5, 38.9, 37.08, 37.67, 47.7, 47.59, 46.56, 46.73, 41.03, 40 and 40.15, 34.5, 34.76, 33.33, 45.63, 44, 43.03, 42.52, 4,137 and HS-240 genotypes showed highest reduction in LAI (0.3, 1.36, 3.78, 3.0 and 0.37, 2.08, 3.94, 3.29) at 30, 70 and 90 d after sowing, respectively (Fig. 1B). The proline content (μg g −1 FW) was found to be increased in all the genotypes studied (30.25, 160.5, 135.2, 262.1, 184.0 and 221.68, 236.55, 261.77, 419.35) under late sown condition as compared with that of timely sown condition (89.6, 106.8, 119.6, 62.0 and 21.98, 20.66, 37.0, 20.86, 18.37) at both anthesis and 15 DAS, except , respectively (Fig. 1C).Evaluation of malondialdehyde (MDA) content, superoxide dismutase (SOD) activity, heat susceptibility index (s) (HIS) and yield associated traits. The amount of malondialdehyde (MDA) (μ mole g −1 FW) produced when polyunsaturated fatty acids in the membrane undergone lipid peroxidation in wheat genotypes were calculated as 13. 06, 11.80 and 7.26, 4.23 in HS 240 and K-0-307 genotypes respectively at the time of anthesis in late sown and timely sown conditions. The similar trends were also observed in HS 240 and K-0-307 genotypes 15 DAS, which followed by Raj 3765, DBW 140 and PBW 574 genotypes ( Fig. 2A). There is no significant increase in superoxide dismutase (SOD) activity (unit mg −1 FW) in genotypes evaluated at anthesis stage under timely and late sown conditions. In contrast, after 15 d of anthesis SOD activity was highest in RAJ-3765 (1.88) whereas in HS-240 and K-0-307 genotypes it was lowest (1.63 and 1.60) under late sown condition (Fig. 2B). The heat susceptibility index (HIS) of HS 240 and K-0-307 wheat genotypes was highest (1.33, 1.57, 1.51 and 1.17, 1.34, 1.65), which followed by DBW 140, Raj 3765 and PBW 574 genotypes (0.846, 0.649 and 0.411), (0.780, 0.905 and 0.905) and (0.897, 0.457 abd 0.682) for 1000-grain weight, grain weight and grain yield, respectively (Fig. 2C). Y...

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“…Widawsky and O'Toole (1996) for rice in eastern India). In a recent comprehensive study of wheat, constraints were given by wheat scientists from nearly twenty major producing countries (Kosina et al 2007;Reynolds et al 2008). They underlined the importance of several types of constraint for wheat in developing countries, including many socio-economic, abiotic and biotic problems.…”

Section: Introductionmentioning

confidence: 99%

Getting the focus right: production constraints for six major food crops in Asian and African farming systems

et al. 2010

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To determine the most important production constraints and associated yield losses for six major food crops in 13 farming systems with high poverty in SubSaharan Africa, South Asia and East Asia, surveys were conducted with 672 experts representing a diversity of backgrounds and experience. Respondents reported large gaps between highest achieved crop yield on smallholder farms and average yield on farm. Yield gaps were smallest for rice (about 60% of current average smallholder farm grain yields), mid size for wheat and cassava, and larger (sometimes double current farm yields) for sorghum, cowpea and chickpea. Gaps were also smaller in the high input and yield farming systems of East Asia and largest in the marginal, drier systems, particularly in Sub-Saharan Africa. Four categories of production constraint (abiotic, biotic, management and socio-economic) were considered important contributors to yield gaps. A diversity of specific constraints was reported for the crops in the different systems. The most severe and widespread specific constraints for wheat involved the deficiency, high cost and poor management of N fertilizer, and problems associated with drought stress at grain filling, mid season drought and irrigation management. Those for rice included N fertilizer problems, soil fertility depletion, various leaf, stem and head pests and diseases, weed competition and inadequate water management. Striga and weed competition, soil resource degradation, poor soil fertility management, and drought were the most severe specific constraints for sorghum. Insect pests of pod, leaf, stem and flower and the high cost of their control dominated the constraint set for cowpea. Helicoverpa pod borer, Botrytis grey mould and control costs were the most severe for chickpea. Unsuitable varieties/poor seed, soil infertility and fertilizer constraints were also widespread with the legumes. Marketing problems and lack of finance were concerns for cassava along with weed competition, African cassava mosaic virus and poor varieties/planting materials. The findings can help to inform priority setting for international agricultural research and development activities on important food crops in major farming systems occupying areas of high poverty.

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Stakeholder perception of wheat production constraints, capacity building needs, and research partnerships in developing countries

Cited by 81 publications

References 6 publications

Developing a Selection Criterion for Terminal Heat Tolerance in Bread Wheat Based on Various Mopho-Physiological Traits

Developing a Selection Criterion for Terminal Heat Tolerance in Bread Wheat Based on Various Mopho-Physiological Traits

Comparative physiological response of wheat genotypes under terminal heat stress

Getting the focus right: production constraints for six major food crops in Asian and African farming systems

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