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Identification of Indian maize landraces tolerant to excess moisture stress

By: Kumar, R.
Contributor(s): Hossain, F [coaut.] | Nepolean, T [coaut.] | Zaidi, P.H.|Babu, R.|Cairns, J.|Jeffers, D.|Kha, L.Q.|Krishna, G.K.|Krishna, V.|McDonald, A.|Ortiz-Ferrara, G.|Palacios, N.|Pixley, K.|Prasanna, B.M.|Rashid, Z.|Tefera, T.|Tiwari, T.P.|Vinayan, M.T.|Vengadessan, V.|Xingming, F.|Xu, Y.|Weidong. C.|Zhang, S.|Vivek, B.S | Kumar, P.L [coaut.] | Gupta, H.S [coaut.] | Prasanna, B.M.
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2011Description: p. 41-42.Summary: Water logging or excess soil moisture has become one of the major problems in South-East Asia and nearly 15% of the total maize growing area is affected by water logging. In India, about 2.5 mha of land area mainly in the states of Eastern-Uttar Pradesh, Bihar and Assam, is affected due to excess soil moisture, leading to the loss of 25-30% yield (DMR, 2001). In India maize is traditionally cultivated during rainy season and over flooding of rivers and incessant rains cause stagnation of water in the maize field. Stagnation of water continuously for 10-12 days, makes the rhizosphere anaerobic, which hinders gaseous exchange between the aerial plant parts and inundated roots. Besides declining oxygen supply in the root, toxic chemicals start accumulating, leading to the nutrient imbalance (Zaidi et al., 2005). Plants also start leaching essential nutrients from the roots contributing to considerable mineral deficiency. Keeping in view, the ever increasing problem of waterlogging, it is important to identify sources of tolerance to excess moisture stress. Landraces are the cultivars which are traditionally cultivated by the farmers for decades and they are considered as the rich genetic resources for multiple traits including abiotic stress tolerance. Thus screening of maize landrace assumes significance in breeding for excess moisture stressCollection: CIMMYT Staff Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection CIS-6424 (Browse shelf) Available
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Water logging or excess soil moisture has become one of the major problems in South-East Asia and nearly 15% of the total maize growing area is affected by water logging. In India, about 2.5 mha of land area mainly in the states of Eastern-Uttar Pradesh, Bihar and Assam, is affected due to excess soil moisture, leading to the loss of 25-30% yield (DMR, 2001). In India maize is traditionally cultivated during rainy season and over flooding of rivers and incessant rains cause stagnation of water in the maize field. Stagnation of water continuously for 10-12 days, makes the rhizosphere anaerobic, which hinders gaseous exchange between the aerial plant parts and inundated roots. Besides declining oxygen supply in the root, toxic chemicals start accumulating, leading to the nutrient imbalance (Zaidi et al., 2005). Plants also start leaching essential nutrients from the roots contributing to considerable mineral deficiency. Keeping in view, the ever increasing problem of waterlogging, it is important to identify sources of tolerance to excess moisture stress. Landraces are the cultivars which are traditionally cultivated by the farmers for decades and they are considered as the rich genetic resources for multiple traits including abiotic stress tolerance. Thus screening of maize landrace assumes significance in breeding for excess moisture stress

Global Maize Program

English

Lucia Segura

INT3057

CIMMYT Staff Publications Collection

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