2 edition of High-yielding rice varieties and areas of their adaptability. found in the catalog.
High-yielding rice varieties and areas of their adaptability.
Indian Council of Agricultural Research.
|LC Classifications||SB191.R5 I47 1974|
|The Physical Object|
|Pagination||60 p. :|
|Number of Pages||60|
|LC Control Number||75900434|
About years ago, Portuguese travellers first introduced the Asian rice, oryza sativa, which was higher yielding and gradually displaced African varieties in lowland rice-growing areas. These include 40 strains of aromatic and red rice each, 25 kinds of fine paddy, 10 high-yielding indigenous types, and 12 deep-water paddy varieties, among others. Although, increased area contributed to increased production but significant increase in per acre yield was brought about by the development of high yielding varieties, improved agronomic practices supported with fertilizers and plant protection measures. The Green Revolution is a term used to describe a tremendous boom in agricultural productivity based on high-yielding varieties (HYV’s) of crops (beginning with wheat, but also including rice and corn) which were developed in the ’s.
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InIR8, the first semi-dwarf, high yielding modern rice variety was released for the tropical irrigated High-yielding rice varieties and areas of their adaptability. book it creates a green revolution in this period in rice production.
Much effort has been given in increasing the rice yield to feed the ever increasing population of the world in general and Bangladesh in particular. This variety established the basic plant type of the high-yielding varieties (HYVs) that have now spread over most rice growing areas. IR8 had a very high grain yield, but also a number of defects, most importantly, poor grain quality, lack Cited by: those high yielding varieties can achieve high yields of grain and whole crop.
Varieties for animal feed have wider genetic background and their ratios of Indica and Japonica vary from one variety to another. KEYWORDS High-yielding rice, grain yield, total digestible nutrients (TDN) yield, animal feed, lodging resistance, Indica and JaponicaAuthor: Hiroshi Kato.
High Yielding Rice Varieties and Hybrids Developed at NRRI. Rice is grown under varying eco-systems on a range of soils under varying climatic and hydrological conditions ranging from waterlogged and poorly drained to well drained situations.
Rice is also grown in different ecologies from irrigated to upland, rain-fed lowland, deep water and very deep or tidal wetland ecologies.
from IRRI revolutionized the rice yields. At the same time, semi-dwarf high yielding variety ‘Jaya’ was released by AICRIP in ushering in green revolution. This transformed the country into a state of self-sufficiency by mid-eighties and stalled rice imports, while beginning an era of exporting rice, earning high foreign.
food commodities. The area under rice cultivation is same but population has become manifold. The options available are to enhance yield of rice on per unit area basis (Cassman et al., ) and development of rice cultivars with high yielding ability which can increase production (IRRI, ).
Producing varieties having. reversed in the post-high-yielding variety (HYV) period. How-ever, during the last 35 years, the state’s rice area has stagnated around 4 million hectares, about 10% of the total rice area of the country.
Odisha’s share in the country’s rice production was more than 11% in the pre-HYV period, which gradually declined to % in File Size: KB.
It is estimated that high-yielding semi-dwarf varieties occupy more than 90% of the harvested area from irrigated lowland rice ecosystems. The yield potential of current high-yielding varieties grown in the tropics is around 10 tonnes/ha during the dry season (high radiation) and tonnes/ha during the wet season.
Sincethe International Rice Research Institute (IRRI), through the Consortium for Unfavorable Rice Environments (CURE), has been working with Myanmar’s Department of Agricultural Research (DAR) to develop suitable rice varieties for these challenging areas.
Their fruitful collaboration has resulted in successfully developing and. Variety: Year of release: Released by: Total duration (days) Yield potential (t/ha) 1. Bala: CVRC: Sattari: Orissa/ CVRC: 3. Rice is one of the premier cereal crops of the World and staple food of more than half of the World's population.
In India, introduction of semi-dwarf high yielding varieties was instrumental in increasing the rice production. Maturing in days when direct-seeded and days when transplanted, Tubigan 22 registered a high yield of about 18 percent than the check variety, PSB Rc Multi-location adaptability trials also showed that Tubigan 22 could yield about 6.
Taiwan and IRRI T aiwan played a significant role in the development of IR8, the “miracle rice” that launched the Green Revolution in Asia. The development of Taichung Native 1 (TN1), a high-yielding semidwarf indica variety by the Taichung District Agricultural Improvement Station inis one of the significant events in the history.
Impact of improved varieties on the yield of rice producing households in Farm households in Ghana have benefited from the programs that promote high-yielding crop varieties and areas where improved rice varieties and other complementary technologies are being promoted.
During the green revolution period increase in the area under nutrient-responsive, high-yielding varieties of rice and wheat in Punjab and Haryana resulted in rapid increase in fertilizer-N use. In these two states fertilizer-N use (per hectare) increased from meager 2–8 kg to – kg.
Drought is the most severe abiotic stress reducing rice yield in rainfed drought prone ecosystems. Variation in intensity and severity of drought from season to season and place to place requires cultivation of rice varieties with different level of drought tolerance in different areas.
Multi environment evaluation of breeding lines helps breeder to identify appropriate genotypes for areas Cited by: Get information about high yielding rice varieties developed at Central Rice Research Institute (CRRI). Users can get list of high yielding rice varieties for upland ecosystem, irrigated ecosystem, shallow rainfed lowland ecosystem, medium deep waterlogged ecosystem and coastal saline ecosystem.
In these areas, rice is the predominant food and occasionally a cash crop because it grows well in flooded soils; however, its yields are low, only – t ha −1, and unstable because modern rice varieties are sensitive to complete submergence or long-duration stagnant floods to depths of over 30 cm.
In India, about million ha of Cited by: Six of these (qDTYqDTYqDTYqDTYqDTYand qDTY ) showed an effect against two or more high-yielding genetic backgrounds in both the lowland and upland ecosystem, indicating their usefulness in increasing the grain yield of rice under drought. The yield of popular rice varieties IR64 and Vandana has been successfully Cited by: Save and Grow in practice: maize, rice, wheat A guide to sustainable cereal production.
This guide describes the practical application of FAO’s ‘Save and Grow’ model of sustainable crop production intensification to the world’s key food security crops: maize, rice and wheat.
In collaboration with national rice research and extension systems, the regional research and development technical assistance (TA) provides support for large-scale disseminations of promising breeding lines seed multiplication; evaluation and dissemination of second-generation, climate-adapted water-saving rice varieties; and development and initial dissemination of new.
The Riceman cometh, with 60 varieties While farmers have been gradually shifting from the low-yielding indigenous varieties to high-yielding ones, several traditional varieties are still popular because of their taste, adaptability to the vagaries of nature and immunity to certain diseases.
“Farmers like Dipen Baruah must be appreciated Author: IE Online. ADVERTISEMENTS: High Yielding Varieties Seeds are undoubtedly land substituting, water economizing, more labour using, and employment generating innovation; nevertheless, they are very delicate and sensitive and therefore require a great deal of care if a successful harvest is to be obtained.
For example, the new seeds are less resistant to droughts and floods and need [ ]. RESEARCH HIGHLIGHTS. The university has so far released high yielding varieties of crops, out of which 62 are of rice, 23 are of oilseeds, 10 of pulses and 08 of spices, 15 are of vegetables and 29 are of other crops.
sprays, permits new crop rotations and often extends the crop area. Development of wheat varieties suitable for late planting has permitted rice-wheat rotation. Thus breeding for early maturing crop varieties, or varieties suitable for different dates of planting may be an important objective.
Maturity has been reduced from days to Hill Rice Irrigated: Semi dwarf ( cm), grains: medium long, white, Yield: 20 Q/ha. Uttar Pradesh. Jaladhi-1 (Kalakhersail) Pure line selection from Kalakhersail: Water Logged Areas: Very tall ( cm), grains: bold, brown, Yield: 20 Q/ha.
West Bengal. Lakshmi (CNM-6) A mutant of IR (Kharif. conditions, wide adaptability, high resistance to rice blast, and tolerance to cold . Therefore, it was the most extensively planted conventional rice variety between and Its cumulative planted area reached million ha during that period .
Two other mutant rice varieties,File Size: KB. The low-yielding traditional varieties and landraces of rice adapted to these flooding conditions have been replaced by flood-sensitive high-yielding rice varieties.
The ‘FR13A’ rice variety and the Submergence 1A (SUB1A) gene were identified for flash flooding and subsequently introgressed to high-yielding rice by: 1.
There are rice relatives in other parts of the world, too. The genus Oryza is among the most ancient grasses and was able to spread to every continent before they drifted too far apart. The result is that different Oryza species are strung out over the tropical regions of the globe, including South America and Australia.
Only one species in Asia and one in Africa were domesticated. Abeysiriwardena () used the variance component analysis to identify the rice varieties for wider adaptability and stability using yield deviation (environment centered yield deviation) approach.
The aim of the paper is to evaluate of cultivars in terms their stability and adaptabilityFile Size: KB. Experts say that with the adaptability of Nerica, time has come for every rural household to grow rice.
It grows in all types of soils at temperatures of between 17 and 30 degrees centigrade. To provide hands-on training and enhance the capability of rice scientists to apply molecular technologies into on-going rice breeding programs aimed at developing high yielding varieties resistant to various biotic and abiotic stresses with improved grain and nutritional quality.
upland growing areas to reduce traditional varieties and trial newer more productive paddy varieties in their fields to maximize yield. Ineighteen rice varieties were trialed on our farm in collaboration with the work of the Ecological Rice Growers.
Abstract. The growth of 20 rice varieties, including both lowland and upland varieties, was evaluated in Kenya under well-watered and water-deficit conditions in four different soil types (black cotton, red clay, volcanic ash, and sandy clay) to compare the adaptability of these varieties to the two water : Magoti Rahab, Mayumi Kikuta, George Chemining’wa, Josiah Kinama, John Kimani, Hiroaki Samejima, Patr.
High-Yielding Varieties (HYVs) of agricultural crops are usually characterized by a combination of the following traits in contrast to the conventional varieties: Higher crop yield per area (hectare) Dwarfness; Improved response to fertilizers; High reliance on irrigation and fertilizers - see intensive farming; Early maturation; Resistive to many diseases; Higher quality and.
the development of high-yielding varieties of wheat and rice. These varieties are responsive to fertilizer inputs, are lodging resistant and their yield potential is times that of varieties grown prior to the Green Revolution. In addition these vari-eties have multiple resistances to diseases and insects and thus have yield stability.
India was once home torice varieties, but high-yield, less hardy hybrids have taken over encouraging farmers to safeguard more resistant strains.
INTRODUCTION. Rice (Oryza sativa L.) is one of the most important food crops in the potential of modern rice cultivars in irrigated tropical areas has been greatly increased since the first semi-dwarf tropical indica cultivar, IR8, was released three decades ago (Khush et al., ), which, to a great extent, alleviated the pressure of food shortage caused by increasing Cited by: 9.
The area under high yielding varieties increased from six million hectares in - 68 to 34 million hectares in - The crop wise coverage in million hectares was as follows: Crop Coverage (in million hectares) Rice Rice is the main staple food in Nepal.
Rainfed lowland rice is grown in nearly 49% of the total rice growing areas in the country. It is directly grown in bounded soil of Tars and the terrace lands of river basin areas within an altitude of masl. Most rainfed lowland farmers are resource-poor and socially marginalized. "Filipino farmers have adopted more than 75 IRRI-bred high-yielding rice varieties sincehave greatly improved their fertilizer and pest management strategies.
LAHORE: The area for cultivation of high-yielding hybrid rice is going to be doubled from 25 percent to 50 percent in the next three years, said Shahzad Ali Malik, chief executive officer of. One new variety, NSIC Rc (Sahod Ulan 11) is for rainfed farms.
There is also a hybrid rice variety, NSIC RcH (Mestiso 48) that PhilRice just released. Yield of the new inbreds has shown in field testing to reach at least six metric tons (MT) per hectare and can exceed 10 MT per hectare in some tested areas.