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Bambang Sriyadi
Research Institute for Tea and Cinchona
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Superior sinensis tea clones release of GMBS 1, GMBS 2, GMBS 3, GMBS 4, and GMBS 5 Bambang Sriyadi
Jurnal Penelitian Teh dan Kina Vol 14 No 2 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v14i2.12

Abstract

Developing of Indonesian green tea with international standards must be supported by availability of exellence sinensis tea plant materials with hight yielding and good quality. Selection mother bush using genetic plant materials of seedling sinensis tea plants at Pasir Sarongge were found 42 exellence mother bushes or 1,35 % from 31.104 bushes collection, but three clones were poor in rooting ability and 11 clones were succeptible to blister blight. We found 28 potential clones with hight yielding, good rooting ability, and resistance to blister blight. Testing material indicated that 15 clones with high yield, good quality, and  good taste. Multi-location tests in three years showed that I.2.167; II.1.1; II.1.46; II.2.157; and II.3.109 clones were high in yielding ability and with good stability in performance and broad adaptability. These clones were officialy release by The Evaluation and Variety Release Committee of the Department of Agriculture on its meeting on March 5, 2009 followed by minister decrees of release of these clones as follows: decree number 1979/Kpts/SR.120/4/2009 concern­ing release of GMBS 1 clones, 1980/Kpts/SR.120/4­/2009 concerning release of GMBS 2 clones: 1981/Kpts/SR.120/4/­2009 concerning release of GMBS 3, 1982/Kpts/SR.120/4/ 2009 concerning release of GMBS 4 clones, and 1983/Kpts/SR.120/4/2009 concerning release of GMBS 5.
Variability and early selection for tea plant population derived from artificial crossings Heri Syahrian Khomaeni; Bambang Sriyadi
Jurnal Penelitian Teh dan Kina Vol 14 No 2 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v14i2.13

Abstract

The purpose of tea breeding is to develope new elite clones. Artificial crossings is the method for developing a new population with high genetic variability in respective traits followed by selection process. Genetic variability information is important in selection method. A hundred and five F1 plants were planted in 1991. These F1 plant were selected from F1 generations of several parental cross combinations between PS 1, PS 354, TRI 777, TRI 2024, TRI 2025, Kiara 8, KP 4, and Cin 143. The crosses were made in 1989. Observed variables were yield per bush, number of pekoe, number of dormant shoot (banji), weight of p+3 (pekoe with three leafs below), weight of p+2 (pekoe with two leafs below), and weight of banji. Phenotypic variance and standard deviation were made. The level of variability of all characters were evaluated. All plants with performance level greater than general mean plus one and a half standard deviation were selected for respective traits. Results showed that yield per bush, number of pekoe, and number of banji had wide variability. The variability of p+3, p+2, and banji had narrow variability. Eight bushes were selected with yield potential ranging from 4,290 kg/ha/year and 6,261 kg/ha/year.
Selection of superior assamica tea clones with high yield potential and high catechine contents Bambang Sriyadi
Jurnal Penelitian Teh dan Kina Vol 15 No 1 (2012)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v15i1.15

Abstract

Selection of superior assamica tea clones with high yielding potential and high catechine contents, was conducted using plant materials of selected mothers bushes from F1 polyclonal seed field with a clone composition of Kiara 8, TRI 777, TRI 2024, TRI 2025, and PS 1. The selected bushes had a minimum 100 g per bush. This research was conducted in Pasir Sarongge Experimental Garden, representing medium elevation and Gambung Experimental Garden, representing high elevation. Experimental design in each location was a randomized complete block design with three replications. Twenty five selected clones were used in this research with one high yielding GMB 7 as a check. Plot contained 15 bushes with plant distant of 120 x 80 cm. Shoot yield were observed in September to November 2010 on six years old plant of third prunning stages with plucking cycle seven days. Catechine content of clone were observed by extracting dry tea shoot in boilling water, followed by deluting in ethyl acetate and HPLC readings. The results showed that in medium elevation clone number of II.32.15 had similar yielding potential with GMB 7 clone with catechine content 16,44%, and at high elevation clones number of II.6.10, III.28.4, III.35.3, and III.36.15 had high yielding potential and catechine content of 15,35%; 16,13%; 16,03%; and 13,14% respectively
Analysis of leaves morphology similarity of several first generation tea clones Bambang Sriyadi
Jurnal Penelitian Teh dan Kina Vol 15 No 2 (2012)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v15i2.21

Abstract

As an effort to conserve tea clone accessions of first generation from genetic erosion, arrangement germplasm in one particular block/area to be easily monitored and managed, is needed. Ideally, tea germplasm collection should consist of a few clone accession number but high genetic variability. To select representative clones that will be conserved in new germplasm collection, leaves morphology similarity has been analysed by cluster analysis using average method. The results showed that by using leaves morphology parameter, from 50 tea clone accession of first generation coming from several tea plantations, it could be reduced into 25 clone accessions from seven clusters, which each has high similarity. The first cluster with 60% similarity could reduced accession from 15 to 6 clone. The second with 74,8% similarity from 25 to 13 clones. The third with 74,8% similarity, from 4 to 2 clones. The fourth with 61,3% similarity, and seventh with 82,1% similarity, both could reduce from 2 clones to 1 clone. To design a tea germplasm collection with 50 accessions of genetic variability, it could represented by 25 clones with low similarity, i.e PG 3, KP 1, Skm 18, Cin 69, Cin 67 dan Cin 58 as the first cluster representatives, Mel 101, PG 4, Pam 15, PG 5,  PG 11, GP 2, BD 13, SA 49, Cin 66, Mal 16, Bks 6 and Sin 5 the second cluster representatives;   Mel 108 and Cin 13 as the third cluster representatives; and Cin 15, Cip 37, GH 5, as well as GP 4 as the fourth, the fifth, and the sixth representatives, respectively.
An assessment of genetic relationship in tea clones based on important chemical compound and yield potential Bambang Sriyadi
Jurnal Penelitian Teh dan Kina Vol 18 No 1 (2015)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v18i1.53

Abstract

Assembling of new excellence high yiel­ding and good quality tea clones was started from identification accession as gene sources, crossing design of parents, selection mother bushes and propagated vegetatively. Crossing beetwen two parent clones which near or remote genetic relationship in tea will failed. Assessment of genetic relationship clone accession was done using secondary datas from description of first and second tea clone gene­ration which cultivated in Indonesia. Data of yield potentials and main chemical com­pound of quality among others catechine, gallat cate­chine, catechine gallo and cafeine were ana­lysed using biplot and cluster analysis. The results showed that no correllation beetwen main chemical compound of quality and yield potentials. Biplot with two dimensions could be explained 92,5% variation of five characters and showed that yield has the highest and catechine the smallest variances. The first gene­ration of tea clones was separated to second at the 46,79% similarity levels. At the 15,60% similarity levels, there were six clusters. GMB 1, GMB 2, GMB 6, GMB 9, and GMB 10 clones were in one cluster was caused of they had high of yield and catechine. GMB 4 and GMB 5 had similarity on medium yields, GMB 7 and GMB 11 had similarity on medium catechine and the highest yield, and GMB 3 and GMB 8 had similarity on low catechine. PS 1 with the lowest catechine gallo was separated to the others. The sixth cluster were SA 40, Kiara 8, SA 35, RB 3, and Cin 143 were characterized by low catechine and yields. 
The growth test of tea clones (Camellia sinensis) from cross pollination first generation clones Vitria Puspitasari Rahadi; Heri Syahrian; Bambang Sriyadi
Jurnal Penelitian Teh dan Kina Vol 19 No 2 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v19i2.118

Abstract

Efforts to improve the productivity of tea needed new high yielding clones were obtained from the cross and easily propagated vegetatively. Preliminary testing of the clones  needs to be done to determine the growth of cuttings and rooting properties of tea clones from hybridization which are selected by potential production. This study used a Randomized Complate Block Design with three replications. The treatments consist of 14 clones from crosses and GMB 7 as clone comparison. The data is analyzed by using ANOVA and Scott Knott test with the level of 5%. The observations are intended to look at the growth of roots and shoots by dismantling seedling in polybag predetermined randomly at each observation. The results showed that the clones tested had good growth with a low mortality rate, and easily propagated vegetatively. The S / R ratio also showed shoot growth more faster than the growth of root. This character is advantageous because the most appropriate selection criteria for planting in the field.
Co-Authors Heri Syahrian Heri Syahrian Khomaeni Vitria Puspitasari Rahadi