Resultados de búsqueda - "Oryza sativa"

Cropping system intensification: vegetable pea can replace fallow between rainfed monsoon rice and irrigated spring rice por Malik, A.I., Nasim, M., Flower, K., Hossain, M.A., Rahman, M.S., Anwar, B., Ali, M.O., Rahman, M.M., Erskine, W.

“…While the region and especially Bangladesh is a major producer of rice (Oryza sativaL. ssp.indica), there is potential to further develop sustainable rice production systems. …”
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Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia por Anantha, M.S., Patel, Devraj, Quintana, Marinell, Swain, Padmini, Dwivedi, Jawaharlal L., Torres, Rolando O., Verulkar, Satish B., Variar, Mukund, Mandal, Nimai P., Kumar, Arvind, Henry, Amelia

“…Drought is one of the most severe constraints reducing rice (Oryza sativa L.) yield in rainfed environments. ‘Sahbhagi Dhan’ (IR74371‐70‐1‐1) is a drought‐tolerant rice variety that was released in India in 2010—and subsequently in Nepal as ‘Sukha Dhan 3’ and in Bangladesh as ‘BRRI Dhan 56’—and has performed well in rainfed farmers’ fields. …”
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Genotypic differences for water-use efficiency and weed competitiveness in dry direct-seeded rice por Mahajan, G., Ramesha, M.S., Chauhan, B.S.

“…Genotypes with improved weed competitiveness and water‐use efficiency (WUE) are needed to enhance and sustain productivity in dry direct‐seeded rice (DDSR) (Oryza sativaL.). The objective of this study was to investigate the relative performance of selected genotypes under DDSR for yield, WUE, and weed‐inflicted relative yield losses in the rainy seasons of 2012 and 2013. …”
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QTLs for tolerance of drought and breeding for tolerance of abiotic and biotic stress: an integrated approach por Dixit, Shalabh, Huang, B. Emma, Cruz, Ma Teresa Sta, Maturan, Paul T., Ontoy, Jhon Christian E., Kumar, Arvind

“…The coupling of biotic and abiotic stresses leads to high yield losses in rainfed rice (Oryza sativa L.) growing areas. While several studies target these stresses independently, breeding strategies to combat multiple stresses seldom exist. …”
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Large-scale production and evaluation of marker-free indica rice IR64 expressing phytoferritin genes por Oliva, Norman, Chadha-Mohanty, Prabhjit, Poletti, Susanna, Abrigo, Editha, Atienza, Genelou, Torrizo, Lina, Garcia, Ruby, Dueñas, Conrado, Poncio, Mar Aristeo, Balindong, Jeanette, Manzanilla, Marina, Montecillo, Florencia, Zaidem, Maricris, Barry, Gerard, Hervé, Philippe, Shou, Huxia, Slamet-Loedin, Inez H.

“…Biofortification of rice (Oryza sativa L.) using a transgenic approach to increase the amount of iron in the grain is proposed as a low-cost, reliable, and sustainable solution to help developing countries combat anemia. …”
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Potassium fertilization in rice-wheat system across Northern India: crop performance and soil nutrients por Singh, Vinod K., Dwivedi, Brahma S., Buresh, Roland J., Jat, M.L., Majumdar, Kaushik, Gangwar, Babooji, Govil, Vidhi, Singh, Susheel K.

“…Rice (Oryza sativa L.)–wheat (Triticum aestivum L.) cropping in South Asia is under stress due to widespread removal of plant nutrients in excess of their application. …”
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Identification of genetic overlaps for salt and drought tolerance using simple sequence repeat markers on an advanced backcross population in rice por Yun, W., Jinping, Z., Yong, S., Jauhar, A., Jianlong, X., Zhikang, L.

“…Salinity and drought are two of the major abiotic stresses that affect rice (Oryza sativa L.) production especially in Asia. Quantitative trait loci (QTL) for salt tolerance (ST) at seedling stage and drought tolerance (DT) at reproductive stage were identified using 77 BC2F8 advanced backcross introgression lines (ILs) derived from a cross of Teqing × Binam in Teqing background. …”
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Brassinosteroids antagonize gibberellin- and salicylate-mediated root immunity in rice por De Vleesschauwer, David, Van Buyten, Evelien, Satoh, Kouji, Balidion, Johny, Mauleon, Ramil, Choi, Il-Ryong, Vera Cruz, Casiana, Kikuchi, Shoshi, Höfte, Monica

“…Aiming to further decipher the molecular logic of BR-modulated immunity, we have examined the dynamics and impact of BRs during infection of rice (Oryza sativa) with the root oomycete Pythium graminicola. …”
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Optimal nitrogen fertilization timing and rate in dry-seeded rice in Northwest India por Mahajan, G., Chauhan, B.S., Gill, M.S.

“…Dry‐seeded aerobic rice (Oryza sativa L.) (DSR) is an emerging production system in the northwest Indo‐Gangetic Plains (IGP) due to increasing constraints of labor and water availability. …”
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Tillage and crop establishment affects sustainability of South Asian rice-wheat system por Gathala, Mahesh K., Ladha, J.K., Kumar, Vivak, Saharawat, Yashpal S., Kumar, Virender, Sharma, Paradeep Kumar, Sharma, Sheetal, Pathak, Himanshu

“…Rice (Oryza sativa L.)–wheat (Triticum aestivum L.) is the major cropping system occupying 13.5 million ha in the Indo‐Gangetic Plains of South Asia. …”
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Developing rice with high yield under phosphorus deficiency: Pup1 sequence to application por Chin, Joong Hyoun, Gamuyao, Rico, Dalid, Cheryl, Bustamam, Masdiar, Prasetiyono, Joko, Moeljopawiro, Sugiono, Wissuwa, Matthias, Heuer, Sigrid

“…The major quantitative trait locus (QTL) Phosphorus uptake1 (Pup1) confers tolerance of phosphorus deficiency in soil and is currently one of the most promising QTLs for the development of tolerant rice (Oryza sativa) varieties. To facilitate targeted introgression of Pup1 into intolerant varieties, the gene models predicted in the Pup1 region in the donor variety Kasalath were used to develop gene-based molecular markers that are evenly distributed over the fine-mapped 278-kb QTL region. …”
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Seed pre-treatment in rice reduces damage, enhances carbohydrate mobilization and improves emergence and seedling establishment under flooded conditions por Ella, Evangelina S., Dionisio-Sese, Maribel L., Ismail, Abdelbagi M.

“…Early flooding helps control weeds but reduces seedling establishment in direct-seeded rice (Oryza sativa). When combined with appropriate management practices, the use of genotypes that better tolerate flooding during emergence can enhance crop establishment in flood-prone areas. …”
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Abscisic acid-induced resistance against the brown spot pathogen Cochliobolus miyabeanus in rice involves MAP kinase-mediated repression of ethylene signaling por De Vleesschauwer, David, Yang, Yinong, Vera Cruz, Casiana, Höfte, Monica

“…Here, we demonstrate that exogenously administered ABA enhances basal resistance of rice (Oryza sativa) against the brown spot-causing ascomycete Cochliobolus miyabeanus. …”
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Population characteristics and tungro transmission by Nephotettix virescens (Hemiptera: Cicadellidae) on selected resistant rice cultivars por Dahal, G., Hibino, H., Aguiero, V.M.

“…Rice green leafhopper Nephotettix virescens (Distant) populations were collected in 1985 from fields planted with a leafhopper resistant rice, Oryza sativa cultivar IR64 in South Cotabato, Philippines. …”
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A germin-like protein gene family functions as a complex quantitative trait locus conferring broad-spectrum disease resistance in rice por Manosalva, Patricia M., Davidson, Rebecca M., Liu, Bin, Zhu, Xiaoyuan, Hulbert, Scot H., Leung, Hei, Leach, Jan E.

“…One advanced backcross line carrying the major-effect QTL on chromosome (chr) 8, which included a cluster of 12 germin-like protein (OsGLP) gene members, exhibited resistance to rice (Oryza sativa) blast disease over 14 cropping seasons. …”
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Long-term comparison of the agronomic efficiency and residual benefits of organic and inorganic nitrogen sources for tropical lowland rice por Cassman, K.G., De Datta, S.K., Amarante, S.T., Liboon, S.P., Samson, M.I., Dizon, M.A.

“…Nitrogen efficiency from Azolla microphylla or Sesbania rostrata green manure, rice straw, and inorganic fertilizer-N was compared in two long-term experiments with irrigated lowland rice (Oryza sativa L.). Treatments included a control and each nitrogen source alone or in combinations that provided 50% of the total applied nitrogen from an organic and inorganic nitrogen source. …”
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Soil carbon and nitrogen changes in long-term continuous lowland rice cropping por Pampolino, Mirasol F., Laureles, Eufrocino V., Gines, Hermenegildo C., Buresh, Roland J.

“…Rice (Oryza sativa L.), the main staple food in Asia, is typically produced on submerged anaerobic soils, which generally have slower decomposition of soil organic matter (SOM) than aerobic soils. …”
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Saving of water and labor in a rice-wheat system with no-tillage and direct seeding technologies por Bhushan, Lav, Ladha, Jagdish K., Gupta, Raj K., Singh, S., Tirol-Padre, A., Saharawat, Y.S., Gathala, M., Pathak, H.

“…Conventional tillage and crop establishment methods such as puddled transplanting in the rice–wheat (Oryza sativa L.–Triticum aestivum L.) system in the Indo‐Gangetic Plains (IGP) require a large amount of water and labor, both of which are increasingly becoming scarce and expensive. …”
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Yield and phosphorus transformations in a rice-wheat system with crop residue and phosphorus management por Gupta, R.K., Yadvinder-Singh, Ladha, J.K., Bijay-Singh, Singh, Jagmohan, Singh, Gurpreet, Pathak, H.

“…Phosphorous deficiency limits productivity of rice (Oryza sativa L.)–wheat (Triticum aestivum L.) systems in the Indo‐Gangetic Plains. …”
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Organic amendments affect soil parameters in two long-term rice-wheat experiments por Tirol-Padre, A., Ladha, J.K., Regmi, A.P., Bhandari, A.L., Inubushi, K.

“…The impacts of continuous applications of an organic manure (farmyard manure [FYM], green manure [GM], and wheat straw [WS]) combined with inorganic fertilizers (N, P, and K) on soil parameters and productivity of rice (Oryza sativa L.)–wheat (Triticum aestivum L.) systems were investigated in two long‐term experiments under conventional tillage in Ludhiana, India, and Bhairahawa, Nepal. …”
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