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Participatory Variety Selection: Mother and Baby Trials of Wheat

Z I Sarker
PSO
WRC, Nashipur, Dinajpur

N C D Barma
CSO
RWRC, BARI, Gazipur

Abstract/ Executive Summary:

Participatory research was conducted at the farmers’ fields of Dinajpur, Jessore, Jamalpur and Rajshahi and Faridpur to facilitate farmers in selecting their preferable varieties and disseminating seeds of those in noble ways. Researches were conducted as mother and baby trials under farmers’ management, focus group discussion, evaluation workshops, trainings and frequent interactions. Farmers’ overall preference score at physiological maturity stage (OPSPM) was the highest for BAW 1161 (8.3) followed by BARI Gom 28 (8.1). The highest overall score after harvest was recorded for BAW 1163 (8.0) and BARI Gom 26 (8.0). BARI Gom 26 and BAW 1163 were the highest preferred genotypes over locations. BARI Gom 26 was 1st preference genotype over locations (Table 1.9.2). The highest grain yield was recorded in BARI Gom 28 (4886 kg ha-1), followed by BARI Gom 26 (4639 kg ha-1). The lowest grain yield was recorded in BAW 1143 (3902 kg ha-1). In baby trials, all the advanced genotypes produced higher yields than Shatabdi at except BAW 1170. The line BAW 1171 produced highest yields at Dinajpur location. Whereas, the entry BAW 1135 produced the highest yield in Jessore and Jamalpur location. But in Faridpur location, BAW 1161 produced the highest yield.

Keywords: Wheat, Mother trial, Baby trial

Location: Dinajpur, Jessore, Jamalpur and Rajshahi and Faridpur

Start Date: 15-11-2012

End Date: 15-04-2013

Program Area: Variety and Species

Commodity: Wheat

Objectives:

1. Demonstrating the performance of the rust resistant promising advanced lines and new varieties to the farmers under their own management conditions. 2 Providing scope to the farmers for selecting the varieties/lines suitable for their own socio-economic conditions. 3 Exploit G x E interaction by growing genotypes in diverse production environments to increase selection efficiency 4 Enhancing seed production and dissemination at farmers’ level.

Methodology:

Researches were conducted as mother trials (MT) and baby trials (BT) at farmers’ fields in 10 villages under Dinajpur, Jessore, Jamalpur, Faridpur and Rajshahi. There were two MTs at two farmers’ fields per village. Twelve genotypes were used in MT at all locations. Each MT was considered as single dispersed replication; therefore, there was different randomization. Plot size for each genotype was 20 m². However, each MT was evaluated by 20 farmers in each village at physiological maturity and after harvest of the crop. Farmers’ scored the genotypes at both stages for different characters separately, as well as, for overall performance. The highest score was 10 at all stations. The highest score was given for the best genotype for a particular character and score reduced with the decrease of superiority of the character. Research and extension personnel assisted farmers during scoring. BAW 1135, BAW 1143, BAW 1157, BAW 1161, BAW 1163, BAW 1168, BAW 1170 and BAW 1171 were used in baby trials with Shatabdi as a check variety in all five locations. Each trial was non-replicated in 8 farmers’ fields under farmers’ management. Plot size of each genotype was 80 m². Baby trials were evaluated by house hold level questionnaire (HLQ) suggested by Witcombe, 2002. Yield data were collected from farmers. Mother trials’ data of all locations will be analyzed in RCB design considering each MT as dispersed replication after getting all data from all locations and combined over locations. The data of baby trials will be also analyzed by two tailed paired t-test and mean data by Chi-square test.

Source of Information: Annual Report 2012-13, Wheat Research Center, Nashipur, Dinajur

Article Link (Online Journal):

Funding Source:

1. Government

Budget: Five lakh

Total Budget (Tk.) : Five lakh

Achievement/Findings:

Mother trial Yield and farmers’ preference scores of the genotypes of mother trials are presented in Table 1.8.1 and 1.8.2. Farmers’ overall preference score at physiological maturity stage (OPSPM) was the highest for BAW 1161 (8.3) followed by BARI Gom 28 (8.1). The highest overall score after harvest was recorded for BAW 1163 (8.0) and BARI Gom 26 (8.0). BARI Gom 26 and BAW 1163 were the highest preferred genotypes over locations. BARI Gom 26 was 1st preference genotype over locations (Table 1.8.2). The highest grain yield was recorded in BARI Gom 28 (4886 kg ha-1), followed by BARI Gom 26 (4639 kg ha-1). The lowest grain yield was recorded in BAW 1143 (3902 kg ha-1). Baby trial In baby trials, all the advanced genotypes produced higher yields than Shatabdi (Table 1.8.3) except BAW 1170. The line BAW 1171 produced highest yields at Dinajpur location. Whereas, the line BAW 1135 have produced the highest yield in Jessore and Jamalpur locations. But in Faridpur location, the line BAW 1161 produced the highest yield.

Knowledge Management: Report/Proceedings