2. Institutional Publications
Permanent URI for this communityhttp://localhost:4000/handle/123456789/96
Browse
10 results
Search Results
Item Aryan muthal aiswarya vare /ആര്യൻ മുതൽ ഐശ്വര്യ വരെ(Kerala Agricultural University, 1993-07) Rosamma, C A; Elsy, C R; Rajan, K MItem Genetic analysis of yield in banana(Kerala Agricultural University, 1990) Rosamma, C A; Narayanan Namboodiri, K MThe forty eight banana varieties showed significant differences with reference to the 18 characters studied and a large portion of variability in all the characters except length of individual finger was due to genetic factors. Out of 17 characters studied, 13 showed strong correlation with bunch weight. Heritability estimates in the broad sense was high (over 80%) for eleven components and moderately high (65 to 80%) for all the rest except length of individual finger. Genetic gain was highest for weight of individual finger which recorded maximum direct effect on bunch weight. Characters like total number of fingers per bunch, number of hands per bunch, bunch length and girth at the base of pseudostem at shooting time have positive direct effect on bunch weight while, girth of individual finger, total number of leaves per plant and leaf area contributed mainly through other characters. Selection index formulated using characters such as bunch weight, number of hands per bunch, bunch length, total number of fingers per bunch and weight of individual finger was the most effective.Item PTB 47, a promising flood tolerant rice variety(Kerala Agricultural University, 1993) Rosamma, C A; Karunakaran, K; Rajappan Nair, NIn order to identify a high yielding variety suited to the flood prone areas, a total of 405 entries were screened for their flood tolerance. Selected entries were yield tested for three seasons and finally BR 51-315-4, a semi-tall nonlodging variety with reasonably high grain as well as straw yield was identified as the ideal variety for these areas. Performance of this variety was highly promising in the multilocational farmers field trials also and this high yielding variety is capable of replacing all the traditional rice varieties in flood prone areas.Item Red triveni, a promising rice variety(Kerala Agricultural University, 1993) Rosamma, C A; Karunakaran, K; Rajappan Nair, NReselection has been effectively utilised as a breeding programme for defect elimination by many workers and a successful programme in this direction is discussed in this paper. Reselection was attempted in the variety Triveni in order to overcome the drawback of sprouting of grains on the panicle itself under high moisture conditions. While attempting for reselection, red riced plants which might have evolved through natural mutation were identified. Red riced plants wilh dormancy were selected after progeny testing and the new line was designated as Red Triveni. Red Triveni exhibited dormancy fora period of 15 to 20 days. Performance of this culture was highly promising in all the station trials and adaptive trials and was released as Ptb 45.Item Pigmented high yielding genotypes for wild rice infested wet lands(Kerala Agricultural University, 1994) Rosamma, C A; Elsy, C RItem Breeding for photosensitive high yielding rice variety(Kerala Agricultural University, 1994) Rosamma, C A; Elsy, C RAn ideal rice variety with high gram and straw yield, adaptability to the rabi season and consumer preference was evolved at the Regional Agricultural Research Station, i'attambi from the cross between Co 25, Triveni and Vellathil Kolappala. This variety called Niln (Ptb 48) combines in itself high grain and straw yield under average management conditions, adaptability to the season and tolerance to most of the pests and diseases.Item Stability of new rice genotypes for grain yield(Kerala Agricultural University, 1994) Elsy, C R; Rosamma, C A; Prabhakaran, P VThe yield potential and grain yield stability of three medium duration rice cultures were studied over six cropping seasons at the Regional Agricultural Research Station, 1'attambi. Cul-8770 and Cul-8772 had shown stable high yield potential over the seasons. These two cultures recorded high mean yield and lesser deviation from regression. BR-51-46-1 with its lower mean yield and higher deviation from regression, is not suited for general cultivation, especi.illy during kharif season. The added advantage of Cul-8770 and Cul-8772 is the good straw yield and red bold grains which are highly preferred in Kerala. All these attributes make Cul-8770 and Cul-8772 suited for release as varieties for general cultivation.Item Adaptability and acceptability components of the rice cultivar kunjukunju(Kerala Agricultural University, 1995) Elsy, C R; Sukumara Dev, V P; Rosamma, C A; Rajan, K M; Nadarajan, LItem Inter-seasonal stability of high yielding rice genotypes(Kerala Agricultural University, 1995) Elsy, C R; Rosamma, C A; Jose MathewItem Character association in ratoon crop of rice (Oryza sativa L.)(Kerala Agricultural University, Vellanikara, 2002) Ambili S, Nair; Rosamma, C AThe present investigation was carried out with 24 rice genotypes, which exhibited ratoon performance. Observations recorded on various characters were subjected to correlation and path analysis. The characters viz. number of productive tillers plant'1, straw yield, total number of tillers during flowering, and LAI (flowering) were found to be the major contributing characters towards ratoon yield.