Genetic Adjustment to Changing Climates: Vegetables

Peña, Robert C. de la; Ebert, Andreas W.; Gniffke, P.A.; Hanson, Peter; Symonds, Rachael C.

doi:10.1002/9780470960929.ch27

Cited by 33 publications

(16 citation statements)

References 48 publications

(44 reference statements)

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“…There are some sites, such as Çorum in Central Anatolia, reporting global cooling (1950–2011) or no change for the 1975–2011 period. Yet in order to face such variable trends, de la Peña et al (2011) argue that stress-tolerant germplasm still offers a sustainable and cost-effective approach to combating environmental variability. Investment in plant breeding to overcome abiotic stresses results in lines that can be deployed globally which can be released as lines adapted to specific stresses and utilized in developing varieties targeted to specific geographical regions.…”

Section: Discussionmentioning

confidence: 99%

“…Vegetables are high-value crops with global importance for the alleviation of poverty and malnutrition and for the attainment and maintenance of good health in humans (Keatinge et al 2011 a ). Efforts to provide genetic adjustment to warming and other abiotic stresses in vegetables have been summarized by de la Peña et al (2011) and more specifically for solanaceous vegetables by Hanson et al (2011): both papers state that the adaptation of vegetable crops to climate uncertainty is quite possible using modern agricultural science, but that knowledge of crop–climate interactions remains fragmentary (Vadez et al 2011). The present paper contributes to the pool of knowledge and recommendations to better quantify the challenges facing vegetable breeders and associated scientists.…”

Section: Introductionmentioning

confidence: 99%

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Projecting annual air temperature changes to 2025 and beyond: implications for vegetable production worldwide

Keatinge

Ledesma

Keatinge³

et al. 2012

J. Agric. Sci.

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SUMMARYData sets were accumulated of annual average maximum, minimum and mean air temperature from a range of sites worldwide, specifically from non-urban locations such as agricultural research institutes, universities and other rural or island locations for the period 1975–2011 or longer where data were available. The data sets were then analysed using linear regression to determine the rate and direction of change in temperature over the reference periods. This analysis was performed to provide vegetable scientists with likely future temperature change scenarios up to 2025 and 2050 (on the assumption that recent trends are maintained) so that breeding, agronomic and other related research programmes may better respond to potential challenges from abiotic and biotic stresses to vegetable production. Substantial variation was evident between sites and between time runs at specific sites. At some locations rapid increases in air temperature are projected, such as for sites in East Asia, but at other locations little change is evident; in rare cases, local cooling is shown. The implications of variability and change in air temperature in the context of constraints to vegetable production and the opportunities to exploit the range of genetic diversity available in climatically uncertain environments are discussed. It is believed that modern agricultural science can address successfully the problems raised by climate uncertainty, yet the lack of sufficient, immediate investment in horticultural disciplines worldwide places the world at severe risk of failing to attain effective food and nutritional security.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Projecting annual air temperature changes to 2025 and beyond: implications for vegetable production worldwide

Keatinge

Ledesma

Keatinge³

et al. 2012

J. Agric. Sci.

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“…In addition, the performance of cultivated checks might have been affected by the 'no-input' (fertilizer) conditions of the experiment. It must also be noted that CA4 is sensitive to heat stress which could cause a reduction in total fruit number even under control conditions (De la Peña et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Relationship between survival and yield related traits in Solanum pimpinellifolium under salt stress

et al. 2012

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A subset of the Solanum pimpinellifolium collection maintained by AVRDC-The World Vegetable Center, Taiwan was evaluated to assess effects of salt stress on physiological traits and yield-related traits with the aim of identifying potential S. pimpi nellifolium accessions useful for salt tolerance breed ing in tomato. We undertook a comparative analysis of yield and plant survival traits under normal and salt stress conditions to obtain a first indication of the crucial traits associated with salt tolerance in S. pimpinellifolium. Although most traits of S. pimpinellifolium accessions showed a similar percent decrease in mean under salt stress compared with the cultivated checks, the former exhibited a wide range for all traits, suggesting great genetic diversity that can be exploited for the identification of salt tolerant genotypes. Genetic variability for yield and survival traits under salt stress was quantitative with low to moderate heritability. Results of correlation and path coefficient analysis revealed no correlation between any of the physiological traits with yield-related traits indicating that the ability to survive and yield under salt stress are two independent sets of traits in S. pimpinellifolium. Results of the path analysis along with heritability and genetic advance showed that shoot dry weight and K/Na ratio are the two most critical component traits for survival, while fruit number is critical for yield per plant. The large S. pimpinellifolium panel evaluated in this study revealed five genotypes possessing better survival traits, seven genotypes with good yield traits, and two genotypes combining both superior survival and yield traits under salt stress.

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“…Many of these crops are hardy, adapted to specific marginal soil and climatic conditions, and can be grown with minimal external inputs [36,37]. This is the case, for example, in the southern part of Rajasthan, India where due to the harsh climatic conditions only robust, drought-tolerant traditional vegetables with short growth cycles such as Cucumis melo var.…”

Section: The Importance Of Underutilized Traditional Crops For Sustaimentioning

confidence: 99%

Potential of Underutilized Traditional Vegetables and Legume Crops to Contribute to Food and Nutritional Security, Income and More Sustainable Production Systems

2014

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Abstract:Agriculture is under pressure to produce greater quantities of food, feed and biofuel on limited land resources. Current over-reliance on a handful of major staple crops has inherent agronomic, ecological, nutritional and economic risks and is probably unsustainable in the long run. Wider use of today's underutilized minor crops provides more options to build temporal and spatial heterogeneity into uniform cropping systems and will enhance resilience to both biotic and abiotic stress. Many traditional vegetables and underutilized legume crops are an essential source of vitamins, micronutrients and protein and, thus, a valuable component to attain nutritional security. Vegetables in general are of considerable commercial value and therefore an important source of household income. Significant research, breeding and development efforts are needed for a range of promising crops to convert existing local landraces into competitive varieties with wide adaptation and promising commercial potential. Access to genetic diversity of these selected crops is a pre-condition for success. Three underutilized minor crops-amaranth, drumstick tree, and mungbean-are highlighted and briefly described. All three crops are well-represented in AVRDC's genebank with substantial inter-and intra-specific genetic diversity, and already have demonstrated their potential for wider adoption and commercial exploitation.

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Genetic Adjustment to Changing Climates: Vegetables

Cited by 33 publications

References 48 publications

Projecting annual air temperature changes to 2025 and beyond: implications for vegetable production worldwide

Projecting annual air temperature changes to 2025 and beyond: implications for vegetable production worldwide

Relationship between survival and yield related traits in Solanum pimpinellifolium under salt stress

Potential of Underutilized Traditional Vegetables and Legume Crops to Contribute to Food and Nutritional Security, Income and More Sustainable Production Systems

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