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Characterization and Evaluation of Rice Germplasm Accessions During 2011-12

Md. Abubakar Siddique,
Scientific Officer,
Genetic Resources and Seed Division, BRRI, Gazipur-1701, Bangladesh.

M. H. K. Baktiar,
Scientific Officer,
Genetic Resources and Seed Division, BRRI, Gazipur-1701, Bangladesh.

Dr. Mohammad Khalequzzaman,
Principal Scientific Officer and Head,
Genetic Resources and Seed Division, BRRI, Gazipur-1701, Bangladesh.

Abstract/ Executive Summary:

A total of 429 germplasm were characterized for 45 morpho-agronomic traits. In T. Aman, forty one germplasm had short (<110 cm), 52 were moderate (110-130 cm) and the rest (130) had long (>130 cm) plant height. Fifty six germplasm had long (>25 cm), 138 were moderate (20-25 cm) and the rest (10) had short (<20 cm) panicle length. The highest yield per hill (76.81 g) was observed in Milyang 80 (acc. 6288) and the lowest (1.55 g) in Maita Vangor (acc. 6660) in respective season. In Boro season, thirty eight (38) germplasm had shorter (<80 cm), 144 were moderate (80-120 cm) and the rest (43) had long (>120 cm) plant height. Seventy two (72) germplasm had higher (>25 cm) panicle length and the rest were moderate to small. The variety IR70181-3-PMI-1-1-6-1 (acc. no. 6543) has the lowest (14.5 g) TGW and Pokkali 28609 (acc no. 6842) has the highest (31.10 g) 1000 grain weight. The highest yield per hill (33.38 g) was obtained in the variety Khato Mala (acc.6851) and the lowest (3.94 g) in Unknown 469324 (acc. 6903). The variety having higher yield would be utilized in crossing program if other characters satisfy the breeder. The rest accessions would be used as parental sources for breeding program with respective objective(s).

Keywords: Rice, Morpho-agronomic traits, BRRI.

Location: BRRI, Gazipur.

Start Date: 01-07-2011

End Date: 30-06-2012

Program Area: Conservation and Biodiversity

Commodity: Rice

Objectives:

To characterize and evaluate the stored as well as new collection of rice germplasm.

Methodology:

Agro-morphological characterization of germplasm accessions is fundamental in order to provide information for plant breeding programs (Lin, 1991). Adequate characterization for agronomic and morphological traits is necessary to facilitate utilization of germplasm by breeders (Upadhyaya et al., 2008). A total of 429 germplasm were grown for characterization of 45 morpho-agronomic traits using the BRRI Rice Germplasm Descriptors and Evaluation Form. Among 429 germplasm, 207 accessions in T. Aman 2011 and 222 in Boro 2011-12 were characterized. Single seedling per hill with a spacing of 25 x 20 cm between rows and plants, respectively were grown under transplanted condition using single row of 5.4 m long per entry. Fertilizers were applied @ 80:10:60 kg NPK/ha in T. Aman and @ 100:10:60 kg NPK/ha in Boro seasons, respectively. Appropriate control measures were taken for pests, diseases and weeds when necessary.

Source of Information: Proceedings of the BRRI Annual Internal Review for 2011-12, Genetic Resources and Seed Division, BRRI, Gazipur-1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In T. Aman, 48 entries/accessions had short (<125 days), 68 were medium (125-135 days) and 91 had long (>135 days) growth duration. Maximum (153) varieties were possessed moderate (10-15) number of tiller and nine having higher (>15) number of effective tiller, respectively. Maximum (176) varieties showed medium (3-5), thirty one were higher (>5) grain length breadth ratio. Besides, nine had high (>25), 110 were moderate (15-25 g) and the rest (88) of varieties/accessions had low (<25 g) 1000 grain weight (TGW). In Boro season, 15 accessions had short (<140 days), 176 were medium (140-160 days) and 34 had long (>160 days) growth duration. Maximum (111) germplasm possessed medium (10-15) number of tiller and 101 varieties possessed moderate number of effective tiller, respectively. Forty nine (49) varieties showed higher (>5) and 175 showed medium (3-5) grain length breadth ratio. Sixty (60) accessions had higher (>25 g), 125 accessions were medium (20-25 g) and remaining 40 accessions had low (<20 g) 1000 grain weight. The grain weight of rice is believed to be a maternally inherited character. Therefore, the accessions having higher 1000 grain weight (TGW) would be used as a parent for rice hybrid development.

Knowledge Management: Report/Proceedings