Identification of prepotent female parent clones from half-sib progeny analysis of Hevea brasiliensis at early stage-An alternate approach to hybridization under sub-Himalayan West Bengal (Record no. 60643)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02387nam a2200217Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Das G |
| 245 #0 - TITLE STATEMENT | |
| Title | Identification of prepotent female parent clones from half-sib progeny analysis of Hevea brasiliensis at early stage-An alternate approach to hybridization under sub-Himalayan West Bengal |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Rubber Science |
| Year of publication | 2019 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 53-62 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Seven promising clones, screened on the basis of their performance over 12 to 15 years under the cold prone agro-climate of sub_Himalayan West Bengal, were evaluated as parents in polycross breeding by evaluation of their open pollinated half-sib progenies. Weight of seeds of RRII 429 was significantly higher than that of RRIM 600 while that of SCATC 88/13 was at par with RRIM 600. Viability of seeds from RRIM 600 and RRII 429 was above 95 per cent, while viability of SCATC 88/13 seeds was low. Among the half-sib progenies of the seven promising clones, performance of progenies of SCATC 88/13 was the best in terms of mean juvenile yield and yield efficiency, despite its low seed weight and viability. Moreover, supremacy of this clone was also evident while selecting half-sib progenies showing above average yield as well in the final screening process. Out of the 28 progenies from different mother clones showing yield efficiency >0.3 g t-1 t-1 cm-1 girth, 21 progenies belonged to SCATC 88/13 indicating prepotency of this parent clone of Chinese origin. This was the first time a wild Amazonian accessions (RO 5363) was used in polycross breeding and the half-sibs produced by this clone had the second largest number of juvenile high yielders after SCATC 88/13. These clones generated more number of superior progenies than Class 1 clones RRIM 600 and RRII 208. For further cloning and evaluation of potential genotypes for the agro-climate of sub-Himalayan India, 34 selected progenies (40;of the top yielders) would be conserved in source-bush nursery. The results also suggest that clones SCATC 88/13 and RO 5363 may be good female parents for further hybridization programs in cold prone regions. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Half-sibs |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Juvenile yield |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | North-East India |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Polycross breeding |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Prepotency |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Wild Amazonian accession |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kumar S |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mydin K.K |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Serial Enumeration / chronology | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | Botany | 17/12/2021 | Volume 32, Issue 1 | Journals |