Environmental Effects on the Resistance of Rice Seedlings to Complete Submergence

Palada, M.C.; Vergara, B. S.

doi:10.2135/cropsci1972.0011183x001200020018x

Cited by 74 publications

(38 citation statements)

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“…The ravages of flooding were better tolerated by a crop raised by planting tall, healthy and vigorous seedlings from nursery fertilized with N. Seedlings grown in nursery with N fertilization were 15-20cm taller than that of unfertilized nursery and so had initial height advantage which enabled better establishment after transplanting in excess water and relatively less damage during subsequent submergence stress. Further, the initial dry matter and carbohydrate content of the young seedlings are believed to help plants to withstand submergence (Palada and Vergara, 1972;Reddy and Mittra, 1985). The crop raised with such seedlings accumulated adequate quantities of carbohydrates in the field due to its better establishment.…”

Section: Growth Parametersmentioning

confidence: 99%

“…The crop planted with healthy and vigorous seedlings from nursery fertilized with N performed better and produced grain yield two-to five-times higher than that of the crop planted with seedlings from unfertilized nursery. The N fertilized crop accumulated greater level of dry matter and carbohydrates which have positive relationship with submergence tolerance of plants (Palada and Vergara, 1972). In all the experiments, fertilizer treatments were applied to nursery seed-bed and not to the main field.…”

Section: Yield and Yield Attributesmentioning

confidence: 99%

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Yield performance of rainfed lowland rice as affected by nursery fertilization under conditions of intermediate deepwater (15?50 cm) and flash floods

1991

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The effect of simulated overhead flash flooding for 10 days at an early vegetative stage of rice grown from transplanted seedlings with and without fertilizer N applied to the nursery soil, was studied under intermediate deepwater conditions at Cuttack, India. Application of 100kg fertilizer N per ha to nursery soil at sowing or in splits improved seedling vigor measured as dry weight and N concentration of the plant tissue at transplanting. The crop raised with healthy and vigorous N-fertilized seedlings was more tolerant to ravages of flooding and showed a better stand with more profuse tillering and less mortality. The grain yield of the semi-tall cultivar Suresh was not affected by N applied to the nursery soil under partial submergence of 70 +-2 cm water depth. However, the semi-dwarf cultivar Gayatri planted with N-fertilized seedlings established better in the early stages and produced more panicles and a two-to five-time higher grain yield. The beneficial effect of nursery fertilization was less marked under natural flooding conditions (25-40 cm). Transplanting semi-dwarf rice with healthy and vigorous seedlings obtained by fertilizing nursery seed-bed could therefore, be a very productive low-cost technology for farmers growing rice under conditions of intermediate deepwater and flash floods.

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Section: Growth Parametersmentioning

confidence: 99%

Section: Yield and Yield Attributesmentioning

confidence: 99%

Yield performance of rainfed lowland rice as affected by nursery fertilization under conditions of intermediate deepwater (15?50 cm) and flash floods

1991

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“…Moreover, excess water triggers serious damage to the growth and survival rate of rice 11,12 . Flood conditions differ in duration and water depth.…”

Section: Introductionmentioning

confidence: 99%

Growth Responses of Seedlings in Oryza glaberrima Steud. to Short-term Submergence in Guinea, West Africa

Joho

Omasa

Kawano

et al. 2008

JARQ

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In inundation areas in rainfed lowland and inland valleys of Guinea as well as other regions in Africa, submergence for a few days to a few weeks with a water depth less than 50 cm occurs in rice cultivation during the rainy season. Young rice seedlings after transplanting are particularly vulnerable to submergence stress. Oryza glaberrima Steud. is well adapted to growth in inundation areas with deepwater conditions in West Africa; however, it is not evident whether it resists short-term submergence stress after transplanting. The purpose of the study was to understand the physiological responses of rice plants after transplanting to short-term submergence stress under rainfed conditions for O. glaberrima by comparison with several genotypes of Oryza sativa L. from Guinea. Eight genotypes of O. glaber rima and seven genotypes of O. sativa including two shoot elongation genotypes, one submergence tolerant genotype as a control cultivars, and four genotypes of common cultivars in West Africa were used. Thirty day-old seedlings were submerged completely for 10 days with medium deepwater conditions at 45 cm water depth at 13 days after transplanting in a lowland field. O. glaberrima showed higher shoot elongation ability during submergence than any genotype of O. sativa that we tested. However, O. gla berrima lodged easily after desubmergence due to longer and rapid shoot elongation during submergence, and thus triggered a decrease in its survival rate. The submergence tolerant genotype of O. sativa maintained the dry matter weight of the leaf blade during submergence through the inhibition of shoot elongation. We suggest that O. glaberrima is susceptible to short-term submergence while it may adapt to prolonged flooding because of improved restoration of aerial photosynthesis and survival rate through shoot elongation ability.Discipline: Crop production Additional key words: anaerobic conditions, dry matter, leaf expansion, shoot elongation, survival JARQ 42 (3), 157 -162 (2008) http://www.jircas.affrc.go.jp This paper reports the results obtained in the joint project on "Improvement of water stress resistance in rainfed rice in

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“…Most aerobic crops cannot withstand standing water or water logging but rice thrives in shallow standing water because it can maintain oxygen supplies to the root through its extensive aerenchyma. However, most of the rice cultivars cannot survive complete submergence for more than a week (Palada and Vergara 1972;Adkins et al 1990). Thus, the extent of damage caused by flooding varies according to the depth and duration of submergence and is further conditional on the topography of the land (Mishra et al 2010), and floodwater conditions (Das et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Transforming rice cultivation in flood prone coastal Odisha to ensure food and economic security

Dar¹,

Chakravorty

Waza³

et al. 2017

Food Sec.

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Environmental Effects on the Resistance of Rice Seedlings to Complete Submergence

Cited by 74 publications

References 0 publications

Yield performance of rainfed lowland rice as affected by nursery fertilization under conditions of intermediate deepwater (15?50 cm) and flash floods

Yield performance of rainfed lowland rice as affected by nursery fertilization under conditions of intermediate deepwater (15?50 cm) and flash floods

Growth Responses of Seedlings in Oryza glaberrima Steud. to Short-term Submergence in Guinea, West Africa

Transforming rice cultivation in flood prone coastal Odisha to ensure food and economic security

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