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Rao, C. S.
- G. Mani (1935-1999)
Abstract Views :206 |
PDF Views:114
Authors
Affiliations
1 Geological Survey of India, AMSE Wing, Vasudha Bhavan, Kumaraswamy Layout, Bangalore 560078, IN
1 Geological Survey of India, AMSE Wing, Vasudha Bhavan, Kumaraswamy Layout, Bangalore 560078, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 55, No 2 (2000), Pagination: 219-219Abstract
No Abstract.Full Text
- Genetic Gain for Yield in Rice Breeding and Rice Production in India to Meet with the Demand from Increased Human Population
Abstract Views :218 |
PDF Views:80
Authors
Affiliations
1 ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad 500 030, IN
2 Institute of Biotechnology, Professor Jayashankar Telangana State Agricultural University, Hyderabad 500 030, IN
1 ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad 500 030, IN
2 Institute of Biotechnology, Professor Jayashankar Telangana State Agricultural University, Hyderabad 500 030, IN
Source
Current Science, Vol 116, No 4 (2019), Pagination: 544-560Abstract
Our objective was to estimate genetic gain for yields in genotypes tested in 11 rice ecosystems from 1995 to 2013 in India and compare the growth trend of human population and national rice grain production in 1974 to 2013. In each ecosystem, the check used remained the same over years but showed similar and significant increases along with top-3 genotypes and experimental mean grain yields derived from sets of genotypes that varied with the year. Therefore, when environmental effects were eliminated, there was no significant genetic gain in yield of genotypes. Annually human population grew linearly at 16.203 million persons and rice production at 1.943 million tonnes (mt) during 1974–1994. This growth slowed during 1995– 2013 in population by 16.131 million persons and in rice production by 1.2753 mt. Breeding for higher genetic yields should be restricted to the four mega environments which offer scope, and exploit the unfolding advancements in rice genomics. The national average yield of un-milled rice was 3.76 t/ha. Evidence indicates that the potential yield in rice is 15–16 t/ha and yields of 10 t/ha is attainable in relatively riskfree irrigated (~20 m ha) and rainfed shallow lowland (11 m ha) ecosystems. Closing yield gap (~6 t/ha) through corrective technological and policy interventions is urgently needed to ensure rice availability to match with the demands of growing population.Keywords
Attainable Yield, Breeding, Genetic Gain, Potential Yield, Mega Environments, Oryza, Population, Production, Rice.Full Text
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- Concept of Liparis torta (Orchidaceae) – An Indian Endemic: Its Rediscovery, Extended Distribution, Relationship and Red List Assessment
Abstract Views :319 |
PDF Views:140
Authors
Affiliations
1 Rural Development and Panchayati Raj Department, Gram Vikas Bhawan, Gangtok - 737101, IN
2 Botanical Survey of India, Headquarters, CGO Complex, Sector 1, Salt Lake City, Kolkata - 700064, IN
3 Central National Herbarium, Botanical Survey of India, Po. Botanic Garden, Howrah - 711103, IN
1 Rural Development and Panchayati Raj Department, Gram Vikas Bhawan, Gangtok - 737101, IN
2 Botanical Survey of India, Headquarters, CGO Complex, Sector 1, Salt Lake City, Kolkata - 700064, IN
3 Central National Herbarium, Botanical Survey of India, Po. Botanic Garden, Howrah - 711103, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 63, No 2 (2021), Pagination: 37-43Abstract
Liparis torta Hook.f. [ORCHIDACEAE-EPIDENDROIDEAE-MALAXIDEAE-MALAXIDINAE] which was known by more than 130 years old type collection from Khasi Hills, Meghalaya has been rediscovered from Arunachal Pradesh. It is a lookalike species of Liparis bootanensis Griff. in gross morphology, but with considerable differences in the floral details and phenological behaviour. Present paper reports its rediscovery after more than 130 years; its range extension in Arunachal Pradesh; its relationship with Liparis bootanensis; and the Red list assessment as per IUCN guidelines. A detail morphological description with illustrative photo plate has been provided for its easy identification. Its original description has been amended and an epitype has been designated as a supplement for its identity. This has also been provided with information on phenology, habitat, distribution and threats.Keywords
Liparis torta, Orchidaceae, Taxonomy, Epitype, Distribution, Endemic.Full Text