Journal articles 2012
Documents
Phenotyping for drought adaptation in wheat using physiological traits
Monneveux P, Jing R, Misra SC (2012). Phenotyping for drought adaptation in wheat using physiological traits. Frontiers in Plant Physiology 3:429. (DOI: 10.3389/fphys.2012.00429).
Wheat (Triticum spp) is one of the first domesticated food crops. It represents the first source of calories (after rice) and an important source of proteins in developing countries. As a result of the Green Revolution, wheat yield sharply increased due to the use of improved varieties, irrigation, pesticides, and fertilizers. The rate of increase in world wheat production, however, slowed after 1980, except in China, India, and Pakistan. Being adapted to a wide range of moisture conditions, wheat is grown on more land area worldwide than any other crop, including in drought prone areas. In these marginal rain-fed environments where at least 60 m ha of wheat is grown, amount and distribution of rainfall are the predominant factors influencing yield variability. Intensive work has been carried out in the area of drought adaptation over the last decades. Breeding strategies for drought tolerance improvement include: definition of the target environment, choice and characterization of the testing environment, water stress management and characterization, and use of phenotyping traits with high heritability. The use of integrative traits, facilitated by the development and application of new technologies (thermal imaging, spectral reflectance, stable isotopes) is facilitating high throughput phenotyping and indirect selection, consequently favoring yield improvement in drought prone environments.
Monneveux P, Jing R, Misra SC (2012). Phenotyping for drought adaptation in wheat using physiological traits. Frontiers in Plant Physiology 3:429. (DOI: 10.3389/fphys.2012.00429).
Wheat (Triticum spp) is one of the first domesticated food crops. It represents the first source of calories (after rice) and an important source of proteins in developing countries. As a result of the Green Revolution, wheat yield sharply increased due to the use of improved varieties, irrigation, pesticides, and fertilizers. The rate of increase in world wheat production, however, slowed after 1980, except in China, India, and Pakistan. Being adapted to a wide range of moisture conditions, wheat is grown on more land area worldwide than any other crop, including in drought prone areas. In these marginal rain-fed environments where at least 60 m ha of wheat is grown, amount and distribution of rainfall are the predominant factors influencing yield variability. Intensive work has been carried out in the area of drought adaptation over the last decades. Breeding strategies for drought tolerance improvement include: definition of the target environment, choice and characterization of the testing environment, water stress management and characterization, and use of phenotyping traits with high heritability. The use of integrative traits, facilitated by the development and application of new technologies (thermal imaging, spectral reflectance, stable isotopes) is facilitating high throughput phenotyping and indirect selection, consequently favoring yield improvement in drought prone environments.
Phenotyping for drought tolerance of crops in the genomics era
Tuberosa R (2012). Phenotyping for drought tolerance of crops in the genomics era. Frontiers in Plant Physiology 3:347. (DOI: 10.3389/fphys.2012.00347).
Improving crops yield under water-limited conditions is the most daunting challenge faced by breeders. To this end, accurate, relevant phenotyping plays an increasingly pivotal role for the selection of drought-resilient genotypes and, more in general, for a meaningful dissection of the quantitative genetic landscape that underscores the adaptive response of crops to drought. A major and universally recognized obstacle to a more effective translation of the results produced by drought-related studies into improved cultivars is the difficulty in properly phenotyping in a high-throughput fashion in order to identify the quantitative trait loci that govern yield and related traits across different water regimes. This review provides basic principles and a broad set of references useful for the management of phenotyping practices for the study and genetic dissection of drought tolerance and, ultimately, for the release of drought-tolerant cultivars
Tuberosa R (2012). Phenotyping for drought tolerance of crops in the genomics era. Frontiers in Plant Physiology 3:347. (DOI: 10.3389/fphys.2012.00347).
Improving crops yield under water-limited conditions is the most daunting challenge faced by breeders. To this end, accurate, relevant phenotyping plays an increasingly pivotal role for the selection of drought-resilient genotypes and, more in general, for a meaningful dissection of the quantitative genetic landscape that underscores the adaptive response of crops to drought. A major and universally recognized obstacle to a more effective translation of the results produced by drought-related studies into improved cultivars is the difficulty in properly phenotyping in a high-throughput fashion in order to identify the quantitative trait loci that govern yield and related traits across different water regimes. This review provides basic principles and a broad set of references useful for the management of phenotyping practices for the study and genetic dissection of drought tolerance and, ultimately, for the release of drought-tolerant cultivars
Phenotyping maize for adaptation to drought
Araus JL, Serret MD, Edmeades GO (2012). Phenotyping maize for adaptation to drought. Frontiers in Plant Physiology 3:305. (DOI: 10.3389/fphys.2012.00305).
The need of a better adaptation of crops to drought is an issue of increasing urgency. However, enhancing the tolerance of maize has, therefore, proved to be somewhat elusive in terms of plant breeding. In that context, proper phenotyping remains as one of the main factors limiting breeding advance. Topics covered by this review include the conceptual framework for identifying secondary traits associated with yield response to drought and how to measure these secondary traits in practice.
Araus JL, Serret MD, Edmeades GO (2012). Phenotyping maize for adaptation to drought. Frontiers in Plant Physiology 3:305. (DOI: 10.3389/fphys.2012.00305).
The need of a better adaptation of crops to drought is an issue of increasing urgency. However, enhancing the tolerance of maize has, therefore, proved to be somewhat elusive in terms of plant breeding. In that context, proper phenotyping remains as one of the main factors limiting breeding advance. Topics covered by this review include the conceptual framework for identifying secondary traits associated with yield response to drought and how to measure these secondary traits in practice.
Phenotyping pearl millet for adaptation to drought
Vadez V, Hash T, Bidinger FR and Kholova J (2012). Phenotyping pearl millet for adaptation to drought. Frontiers in Plant Physiology 3:386. (DOI: 10.3389/fphys.2012.00386).
Pearl millet is highly resilient to some of the driest areas of the world, like the Sahel area or fringes of the Thar desert in India. Despite this, there is a wealth of variation in pearl millet genotypes for their adaptation to drought and the object of this paper was to review some related work in the past 25 years to harness these capacities toward the breeding of better adapted cultivars. Work on short duration cultivars has been a major effort. Pearl millet has also some development plasticity thanks to a high tillering ability, which allows compensating for possible drought-related failure of the main culm under intermittent drought. The development of molecular tools for breeding has made great progress in the last 10–15 years and markers, maps, EST libraries, BACs are now available and a number of quantitative trait loci (QTLs) for different traits, including drought, have been identified. Most of the work on drought has focused on the drought tolerance index (DTI), an index that reflect the genetic differences in drought adaptation that are independent of flowering time and yield potential.
Vadez V, Hash T, Bidinger FR and Kholova J (2012). Phenotyping pearl millet for adaptation to drought. Frontiers in Plant Physiology 3:386. (DOI: 10.3389/fphys.2012.00386).
Pearl millet is highly resilient to some of the driest areas of the world, like the Sahel area or fringes of the Thar desert in India. Despite this, there is a wealth of variation in pearl millet genotypes for their adaptation to drought and the object of this paper was to review some related work in the past 25 years to harness these capacities toward the breeding of better adapted cultivars. Work on short duration cultivars has been a major effort. Pearl millet has also some development plasticity thanks to a high tillering ability, which allows compensating for possible drought-related failure of the main culm under intermittent drought. The development of molecular tools for breeding has made great progress in the last 10–15 years and markers, maps, EST libraries, BACs are now available and a number of quantitative trait loci (QTLs) for different traits, including drought, have been identified. Most of the work on drought has focused on the drought tolerance index (DTI), an index that reflect the genetic differences in drought adaptation that are independent of flowering time and yield potential.
Plant nutrition: Rooting for more phosphorus
Kochian LV (2012). Plant nutrition: Rooting for more phosphorus. Nature 488(7412):466–467. (DOI: 10.1038/488466a). Not open access: view abstract online
Kochian LV (2012). Plant nutrition: Rooting for more phosphorus. Nature 488(7412):466–467. (DOI: 10.1038/488466a). Not open access: view abstract online
Primary identification and evaluation of wheat germplasm from Generation Challenge Programme
Zhang J, Sun M, Zhang D, Yan J, Shen S (2012). Primary identification and evaluation of wheat germplasm from Generation Challenge Programme. Journal of Shanxi Agricultural Sciences 40(5):429–432. (DOI: 10.3969/j.issn.1002-2481.2012.05.01). (G7010.02.01). Article in Chinese with abstract in English. Not open access: view online
An identification and evaluation for 1 000 seed weight, grain number per ear, ear number per plant, plant height, plumpness of kernels and yield of 146 wheat germplasms from GCP projects were conducted. The results showed that: the tested varieties had a wealth of genetic diversity in yield, grain number per ears, ear number per plant and so on; there were different correlations in each trait; heading and maturity stages had effects to grain number per ear, yield and 1 000 seed weight. We had successfully selected 8 big ear fertility varieties, 8 big grain fertility varieties, 5 short stalk fertilities and 25 fine varieties of super traits and outstanding fertility.
Zhang J, Sun M, Zhang D, Yan J, Shen S (2012). Primary identification and evaluation of wheat germplasm from Generation Challenge Programme. Journal of Shanxi Agricultural Sciences 40(5):429–432. (DOI: 10.3969/j.issn.1002-2481.2012.05.01). (G7010.02.01). Article in Chinese with abstract in English. Not open access: view online
An identification and evaluation for 1 000 seed weight, grain number per ear, ear number per plant, plant height, plumpness of kernels and yield of 146 wheat germplasms from GCP projects were conducted. The results showed that: the tested varieties had a wealth of genetic diversity in yield, grain number per ears, ear number per plant and so on; there were different correlations in each trait; heading and maturity stages had effects to grain number per ear, yield and 1 000 seed weight. We had successfully selected 8 big ear fertility varieties, 8 big grain fertility varieties, 5 short stalk fertilities and 25 fine varieties of super traits and outstanding fertility.
Probability of success of breeding strategies for improving pro-vitamin A content in maize
Zhang X, Pfeiffer WH, Palacios-Rojas N, Babu R, Bouis H and Wang J (20102). Probability of success of breeding strategies for improving pro-vitamin A content in maize. Theoretical and Applied Genetics 125(2):235–246. (DOI: 10.1007/s00122-012-1828-4). (IBP project, G8009) Not open access: view abstract
Zhang X, Pfeiffer WH, Palacios-Rojas N, Babu R, Bouis H and Wang J (20102). Probability of success of breeding strategies for improving pro-vitamin A content in maize. Theoretical and Applied Genetics 125(2):235–246. (DOI: 10.1007/s00122-012-1828-4). (IBP project, G8009) Not open access: view abstract
QTL Analysis for root protein in a backcross family of cassava derived from Manihot esculenta ssp flabellifolia
Akinbo O, Labuschagne MT, Marín J, Ospina C, Santos L, Barrera E, Gutiérrez J, Ewa F, Okogbenin E, Fregene M (2012). QTL Analysis for root protein in a backcross family of cassava derived from Manihot esculenta ssp flabellifolia. Tropical Plant Biology Published online 21 February 2012. 12pp. (DOI: 10.1007/s12042-012-9095-8). Not open access: view abstract
Akinbo O, Labuschagne MT, Marín J, Ospina C, Santos L, Barrera E, Gutiérrez J, Ewa F, Okogbenin E, Fregene M (2012). QTL Analysis for root protein in a backcross family of cassava derived from Manihot esculenta ssp flabellifolia. Tropical Plant Biology Published online 21 February 2012. 12pp. (DOI: 10.1007/s12042-012-9095-8). Not open access: view abstract
Quantitative trait loci and breeding
Fleury D, Delannay X and Langridge P (2012). Quantitative trait loci and breeding. eLS published online. (DOI: 10.1002/9780470015902.a0023712). Not open access: view abstract
Fleury D, Delannay X and Langridge P (2012). Quantitative trait loci and breeding. eLS published online. (DOI: 10.1002/9780470015902.a0023712). Not open access: view abstract
Quantitative trait locus analysis and construction of consensus genetic map for foliar disease resistance based on two recombinant inbred line populations in cultivated groundnut (Arachis hypogaea L.)
Sujay V, Gowda MVC, Pandey MK, Bhat RS, Khedikar YP, Nadaf HL, Gautami B, Sarvamangala BC, Lingaraju S, Radhakrishan T, Knapp SJ, Varshney RK (2012). Quantitative trait locus analysis and construction of consensus genetic map for foliar disease resistance based on two recombinant inbred line populations in cultivated groundnut (Arachis hypogaea L.). Molecular Breeding 30(2):773–788. (DOI: 10.1007/s11032-011-9661-z)
Late leaf spot (LLS) and rust have the greatest impact on yield losses worldwide in groundnut (Arachis hypogaea L.). With the objective of identifying tightly linked markers to these diseases, a total of 3,097 simple sequence repeats (SSRs) were screened on the parents of two recombinant inbred line (RIL) populations, namely TAG 24 9 GPBD 4 (RIL-4) and TG 26 9 GPBD 4 (RIL-5), and segregation data were obtained for 209 marker loci for each of the mapping populations. Linkage map analysis of the 209 loci resulted in the mapping of 188 and 181 loci in RIL-4 and RIL-5 respectively. Using 143 markers.
Sujay V, Gowda MVC, Pandey MK, Bhat RS, Khedikar YP, Nadaf HL, Gautami B, Sarvamangala BC, Lingaraju S, Radhakrishan T, Knapp SJ, Varshney RK (2012). Quantitative trait locus analysis and construction of consensus genetic map for foliar disease resistance based on two recombinant inbred line populations in cultivated groundnut (Arachis hypogaea L.). Molecular Breeding 30(2):773–788. (DOI: 10.1007/s11032-011-9661-z)
Late leaf spot (LLS) and rust have the greatest impact on yield losses worldwide in groundnut (Arachis hypogaea L.). With the objective of identifying tightly linked markers to these diseases, a total of 3,097 simple sequence repeats (SSRs) were screened on the parents of two recombinant inbred line (RIL) populations, namely TAG 24 9 GPBD 4 (RIL-4) and TG 26 9 GPBD 4 (RIL-5), and segregation data were obtained for 209 marker loci for each of the mapping populations. Linkage map analysis of the 209 loci resulted in the mapping of 188 and 181 loci in RIL-4 and RIL-5 respectively. Using 143 markers.
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