Performance of some seedling progenies derived by crossing of selected Hevea cultivars (Record no. 64794)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01739nam a2200169Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Vithanage S P |
| 245 #0 - TITLE STATEMENT | |
| Title | Performance of some seedling progenies derived by crossing of selected Hevea cultivars |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Proceedings of the First Symposium on Plantation Crop Research : Current Trends and Future Challenges,8-9 July, 2004, Sri Lanka, pp.109-115. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Six seedling families derived by crossing selected clones were evaluated for growth and yield. The between family difference for growth was not significant in the third year after planting, but was significant at the age of five years. The mean girth and the yield of the seedling progeny of the cross RRIC 100 X PB 255 was distinctly better than that of the other families. Progenies of the three families viz; RRIC 100 x PB 255, RRIC 121 x PB 255 and RRIC 100 x PR 309 were qualified for tapping at the fifth year of age. The same three familes gave higher mean g/t/t yield over the overall mean of 28.57. Eighty percent of the individuals of the family RRIC 100 x PB 255 have yielded more than 20 g/t/t during the three year period studied. Ten mother trees were selected based on the individual selection for yield for subsequent vegetative propagation. Five of these trees had come from the RRIC 100 X PB 255, which was the highest-ranking family for both yield and girth. The secondary characters of these trees were also acceptable for selection for limited scale planting as Estate/RRI collaborative clone trials (ECTs). |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Hevea breeding and selection |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Hevea seedlings |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Attanayake D P S T G |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Jayasekera N E M |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rupatunge K W |
| 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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Koha item type |
|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | Botany | 17/12/2021 | Journals |