สืบค้นงานวิจัย
Identification of Promising Clones of Hevea for Commercial Cultivation in Tripura
P. Deepthy Antony - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Identification of Promising Clones of Hevea for Commercial Cultivation in Tripura
ผู้แต่ง / หัวหน้าโครงการ (EN): P. Deepthy Antony
บทคัดย่อ (EN): India stands first in productivity and fourth in production of natural rubber (Hevea brasiliensis). To meet the increasing demand for NR for the industry, an increase in its production is inevitable. About 93% of NR production in India is contributed by Kerala and Tamil Nadu which comprise the traditional rubber growing tracts of India. Any deviation from the latitude range of 100 S and 80N of equator is a non traditional environment. The state of Tripura of the NE India (22056’-24032’N and 91010’-92021’E) represents non-traditional region for rubber cultivation. Tripura has a sub-tropical warm humid climate with a conspicuous winter season and strong wind limiting the growth and yield of rubber. Hence, it is crucial to identify the promising clones for this region for enhancing production and productivity of rubber. With this objective, clone trials were conducted from 1979 onwards at Regional Research Station of RRII at Agartala, for evaluation of potential clones for their adaptability. An attempt is made to identify the potential clones for commercial cultivation in Tripura, considering their performance in different evaluation trials conducted here. Thirty two oriental clones have been evaluated so far in Large Scale trials (LST) and on-farm trials (OFT) in Tripura. The trials had partially overlapping sets of clones with RRIM 600 as local check. Yield data from these trials on performance of clones in Tripura were compiled and analysed. First trial planted in 1979 consisted of 15 clones (RRII 5, RRII 105, RRII118, RRII 203, RRIM 600, RRIM 605, RRIM 703, PB 5/51, PB 86, PB 235, RRIC 52, RRIC 105, GI 1 and Harbell). Yield data for 14 years was recorded. Second trial planted in 1987 involved 12 clones (RRII 105, RRII 118, RRIM 600, PB 5/51, PB 86, SCATC 83/114, SCATC 93/114, Haiken 1, PR 107, GT 1 and GI 1). Yield data of seven years were compiled and incorporated in this paper. Third trial consisting of 10 clones (RRII 105, RRIM 600, RRIM 612, PB 217, PB 260, PB 235, PB 311, SCATC 88/13, SCATC 93/114 and Haiken 1) was planted in 1995. Yield data for seven years from this trial were compiled and analysed. Fourth trial with 13 clones (RRII 51, RRII 105, RRII 203, RRII 176,RRII 414, RRII 417, RRII 422, RRII 429, RRII 430, PB 217, PB 235, RRIM 600 and RRIC 100) was established in 1996. Yield data for nine years was compiled and analysed. First on farm trial at Killamura had six clones (RRII 203, RRII 208, PB 235, PB 260, RRIM 600 and Haiken 1) planted in blocks in 1997. Yield data for five years was compiled for analysis. Second OFT at TFDPC plantation in Bagafa had 8 clones (RRIM 600, RRIM 703, RRII 118, RRII 203, RRII 208, PB 235, PB 260, and Haiken 1) planted in 2000. Mean yield for two years were included. The yield performance of the clones in each trial was analysed to see the potential of the clones for commercial cultivation in Tripura. In the first large scale trial., mean yield revealed that PB 235 (57g/t/t) recorded highest yield among the clones followed by RRII 203 (52.3 g/t/t) and RRIM 600 (47.3 g/t/t). Clones RRII 105 (41g/t/t), RRII 118 (43.6 g/t/t) and RRIM 703 (44.7 f/t/t) also gave high mean yield in the trial. The steady increase in yield of RRII 203 over the years was also reported. In the second trial, clone RRII 208 gave the highest mean yield (43.7 g/t/t) followed by RRIM 600 (37.7 g/t/t). Clones PB 5/51 (33.9 g/t/t), RRII 118 (32.1 g/t/t) and SCATC 88/13 (30.2 g/t/t) also gave high yield. Based on pattern analysis of yield data from this trial RRII 208 and RRIM 600 were identified as clones with adaptability over environments. In the third trial, clone PB 311 gave the highest yield among the clones tested (48.9 g/t/t) followed by RRII 105 (48.1 g/t/t). Clones SCATC 93/114 (46.1 g /t/t), RRIM 600 (44.3 g/t/t), PB 235 (43.2 g/t/t), PB 260 (41.4 g/t/t), SCATC 88/13 (41.1 g/t/t) and PB 217 (40.5 g/t/t) also recorded high mean yield in the trial. In the fourth trial, clone RRII 422 (48.5 g/t/t) recorded the highest yield among the clones evaluated followed by RRII 429 (46.3 g/t/t) and RRII 417 (42.6 g/t/t). RRIM 600 (41.3 g/t/t), RRIC 100 (37.9 g/t/t), RRII 105 (39 g/t/t) and PB 235 (36.4 g/t/t) also recorded high yield in the trial. In the OFT at killamura, PB 235 had the highest yield (1136 kg/ha/ yr) followed by RRIM 600 (1054 kg/ha/yr) and RRII 208 (1021 kh/ha/yr). Yield over 2 years from OFT at Bagafa showed that RRIM 600 was the highest yielder (845 kg/ha/yr) followed by PB 235 (790 kg/ha/yr). Based in a survey on existing commercial plantations planted in 1980’s which predominantly had RRIM 600, RRII 105, and GT1 clones, it was earlier reported that RRIM 600 (1212 kg/ha/yr) was the highest yielder followed by RRII 105 (1058 kg/ha/yr), while GT 1 yielded 791 kg/ha/yr. Susceptibility of RRII 105 to wind damage was also reported. The yield data revealed that the performance of the clones across trials was in agreement. Clones RRIM 600, PB 235, RRII 208, and RRII 105 consistently gave high yield in all trials in which they were tested. Apart from these, 12 clones (RRII 203, RRII 118, SCATC 88/13, SCATC 93/114, PB 217< PB 311, RRIM 703, PB 260, RRII 417< RRII 422, RRII 429 and RRII 430) gave higher mean yield than the grand mean (36.7g/t/t) Clones PB 260 and RRII 203 promising in the LST, yield data from PFT’s, which are yet to be tapped, needs to be obtained for confirming their adaptability for this region. Clone RRII 422 was observed to be susceptible to clod in the early establishment stages. Incidence of TPD is moderate in RRIM 600 and PB 235, low in RRII 203, RRII 208 and RRIM 703 and above average in RRII 400 series clones. Based on the trials conducted so far, clones RRIM 600, RRII 208, PB 235, PB 260 and RRII 105 showed better yield performance and can be considered suitable for commercial planting in Tripura. Clone RRIM 600 with attributes like high yield, stability over environments, low wind damage and mild incidence of powdery mildew has been recommended in category I for planting in this region. High yielding clones recommended in category II for planting include RRII 105, RRII 203, RRII 208, RRII 417, RRII 422, RRII 429, RRII 430, PB 235 and GT1. Yield data from the four on-going on-farm trials will aid in further validation of yield performance of the clones in Tripura.
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ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): yield
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
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P. Deepthy Antony. "Identification of Promising Clones of Hevea for Commercial Cultivation in Tripura". ไม่ระบุหน่วยงาน. ม.ป.ป.

P. Deepthy Antony. "Identification of Promising Clones of Hevea for Commercial Cultivation in Tripura". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Identification of Promising Clones of Hevea for Commercial Cultivation in Tripura
P. Deepthy Antony
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
Promising latex timber clones of Hevea brasiliensis evolved by ortet selection Evaluation of some clones (Hevea brasiliensis) in a small scale trial in the southern part of Guatemala Identification of Resistance of Hevea brasiliensis Clones to Corynespora Leaf Fall Disease Identification of Rubber Clones (Hevea brasiliensis) Using Inter Simple Sequence Repeat (ISSR) Markers Some Considerations Concerning the Yield Potential of Some Clones (Hevea brasiliensis) Rapid Molecular Identification and Detection of Corynespora cassiicola of Hevea brasiliensis Recombination Breeding of Hevea brasiliensis in India: Clones Evolved From the 1983 Hybridization Programme Early Performance of some Clones of Hevea brasiliensis In Dry Sub humid Region of North Konkan Evaluation of Rubber (Hevea brasiliensis) Modern Clones under Certain Stressful Climatic Conditions of Odisha Studies on Cold Tolerance of Hevea brasiliensis (Muell. Arg.) Clones under Controlled Environmental Conditions
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