Characterization of Germplasm of Upland Rice (Oriza Sativa L.)
| dc.contributor.advisor | D.N. Singh | |
| dc.contributor.author | Sunil Kumar | |
| dc.date.accessioned | 2024-07-12T05:53:44Z | |
| dc.date.available | 2024-07-12T05:53:44Z | |
| dc.date.issued | 2000 | |
| dc.description.abstract | Rice (Oryza sativa L.) ix most important staple food of more than half of the human race and it is primarily a high calorie food containing 85 per cent protein, 0.34 per cent fat, about 90 per cent carbohydrate and trace amount of ash, fiber and vitamin B after milling. It occupies second position in the world in acreage and production, only after wheat. Its area is concentrated in South-East Asian Countries, which accounts for 80 per cent of the total production. In India it is also most important staple food crop covering 44 million hectares of land and producing 84.74 millions tonnes (Survey of Indian Agriculture 2000) Spectacular yield gains in rice production were achieved after the introduction of semi dwarf varieties with improved management practices but rice being cultivated in monsoon, faces problem of adaptation for specific ecosystem such as waterlogging, salinity, drought, low solar radiation etc. Also continuous and intensive cultivation of newly developed semidwarf varieties under high fertility condition resulted in problem related to buildup of pest populations and outbreak of epidemics. To combat these problems breeders are looking for new sources of genetic material for Incorporation of multiple resistance for which traditional cultivars have been found to be major donors Of all the ecotypes the upland ecology is more variable and the varietal improvement is more challenging Eighty per cent of the varieties released so for are for irrigated ecology and hardly 5 per cent for uplands and low productivity reduces the average yield of the rainfed upland areas. Therefore, collection, conservation, characterization and evaluation of germplasm, which is the backbone of any crop improvement programme was undertaken to prepare a systematic list or catalogue for ready references of breeders and scientists. Direct seeding in dry condition under upland situation was done during 1999 in 2 replication plot of 10 metre and 30 cm length, 90 cm wide. Each replication consists 50 germplasm and 3 check varieties One germplasm in two-crop row and each row consisted seven hills in both replication. In first replication crop row started from check varieties and second row started from 50 germplasm ended with check variety Birsa Dhan-101. The distance from row to row was 20 cm and plant to plant distance was 15 cm. The characterization and evaluation work were done on 12 different characters. Some characters are preferred by farmers as useful traits. Thus, the results evaluated that eight germplasm could be used as donors for favourable genetic characters and for direct release of variety viz. Gora Dhan-8, Lalmati Gora-1, Gora G.P-2, Gora Dhan-1, Gora Dhan-2, Nanhi Gora-1, Karanga Gora-I and Barka Gora-1. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810211841 | |
| dc.language.iso | English | |
| dc.pages | 71 | |
| dc.publisher | Birsa Agricultural University, Ranchi | |
| dc.sub | Plant Breeding | |
| dc.theme | Characterization of Germplasm of Upland Rice (Oriza Sativa L.) | |
| dc.these.type | M.Sc | |
| dc.title | Characterization of Germplasm of Upland Rice (Oriza Sativa L.) | |
| dc.type | Thesis |