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Vinayan, M.T.

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Vinayan
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M.T.
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Vinayan, M.T.
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0000-0001-5348-4342

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Now showing 1 - 5 of 5
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    Genomic regions associated with salinity stress tolerance in tropical maize (Zea Mays L.)
    (Frontiers Media S.A., 2022) Zaidi, P.; Shahid, M.; Seetharam, K.; Vinayan, M.T.
    Publication
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    Phenotyping for abiotic stress tolerance in maize low nitrogen stress: a field manual
    (CIMMYT, 2018) Zaman-Allah, M.; Das, B.; Cairns, J.E.; Vinayan, M.T.; Tarekegne, A.T.; Magorokosho, C.; Zaidi, P.; Seetharam, K.
    Poor soil fertility is one of the primary constraints to maize production in Sub-Saharan Africa (SSA) where most of the farming land is heavily depleted of nitrogen (N) as a result of repeated crop cultivation over several decades without replenishment. This is largely associated with the high fertilizer cost and dependence on rain-fed agriculture that translates into most smallholder farmers being reluctant to invest in expensive inputs such as fertilizer. One approach to addressing the poor soil fertility problem is to exploit natural genetic variation in maize to develop improved varieties that respond better to the small amounts of fertilizer applied by small-scale farmers in SSA. Research has shown that there is substantial genetic variation for maize yield under nitrogen stress. Maize varietal performance under optimal fertilization is not always positively correlated, or predictive, of performance under the N stress conditions that prevail in SSA. Therefore, the most effective way to develop maize varieties that are better suited to low levels of nitrogen fertilization is to select directly under nitrogen stress through the establishment of well-managed, low N phenotyping sites. This manual is designed for maize breeders and field technicians in sub-Saharan Africa, South and Southeast Asia and Latin America working on improving the tolerance of maize to low N stress. It covers aspects related to: Selection and development of fields suitable for low N stress phenotyping. Factors that affect the quality of low N stress phenotyping. Managing uniform stress in low N stress experiments. Effective and timely phenotypic data collection.
    Publication
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    Morpho-physiological traits associated with heat stress tolerance in tropical maize (Zea mays L.) at reproductive stage
    (Southern Cross Publishing Group, 2019) Noor, J.J.; Vinayan, M.T.; Umar, S.; Devi, P.; Iqbal, M.; Seetharam, K.; Zaidi, P.
    Publication
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    Phenotyping for abiotic stress tolerance in maize: waterlogging stress. A field manual
    (CIMMYT, 2016) Zaidi, P.; Vinayan, M.T.; Seetharam, K.
    Maize crops grown during the summer rainy season in the tropics occasionally face extreme weather conditions that limit crop establishment and yield potential. Among various abiotic stresses, contingent/intermittent soil waterlogging is one of the important constraints for maize production in the Asian tropics and many other maize growing areas around the world. Rainfed maize crops grown during the monsoon season in the Asian tropics occasionally face temporarily waterlogged soils and anaerobic conditions, even in well drained fields. These waterlogged soils adversely affect various crop growth stages, overall plant stand and final grain yield. Moreover, the increasing demand for maize in Asia is rapidly transforming cropping systems in the region from rice monoculture to more profitable rice-maize systems. However, maize production in rice-maize systems frequently faces the problem of early stage excessive soil moisture, as the soils of paddy fields are often saturated due to late monsoon rains. This manual was developed for maize breeders and field technicians who manage screening/phenotyping for waterlogging tolerance with the purpose of identifying genotypic variability in maize for use in breeding programs targeting waterlogging tolerant maize.
    Publication
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    Addressing climate change effects and meeting maize demand for Asia
    (GMRI, 2011) Zaidi, P.; Babu, R.; Cairns, J.E.; Jeffers, D.P.; Kha, L.Q.; Krishna, G.; Krishna, V.; Mcdonald, A.; Ortiz-Ferrara, G.; Palacios-Rojas, N.; Pixley, K.V.; Prasanna, B.M.; Rashid, Z.; Tadele Tefera; Tiwari, T.P.; Vinayan, M.T.; Vengadessan, V.; Fan, X.M.; Yunbi Xu; Weidong, C.; Zhang, S.; Vivek, B.
    This includes the extended summaries of the scientific presentations made during the 11th Asian Maize Conference held in Nanning, China, during 7-11 November 2011. The Conference is co-organized by the International Maize and Wheat Improvement Center (CIMMYT), and the Guangxi Maize Research Institute (GMRI), China. The theme of the workshop is "Addressing Climate Change Effects and Meeting Maize Demand for Asia". The 11th AMC brings together over 300 maize scientists, researchers and students from public and private sectors, including participants from several Asian countries, including Bangladesh, Bhutan, China, Colombia, India, Indonesia, Iran, Nepal, Philippines, Thailand, Turkey, Vietnam, besides Italy, Kenya, New Zealand, Mexico, Germany, Myanmar and the USA. The Conference features over 225 presentations, including keynote lectures, invited oral presentations, and poster presentations, besides scientific deliberations and discussions on maize in Asia. The extended summaries includes reviews and research papers on a diverse range of topics, including maize trends, challenges and opportunities in Asia, abiotic and biotic stresses affecting maize production, novel tools for maize improvement, conservation agriculture, nutritional enrichment of maize, participatory plant breeding, community-based seed production, public-private partnerships, maize value chains, policies and socio-economics relevant to Asia.
    Publication