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Advance Yield Trial (ayt) of Wheat

M A Hakim
Wheat Research Centre, BARI

Z I Sarker
Wheat Research Centre, BARI

N C D Barma
Wheat Research Centre, BARI

M M Rahman
Wheat Research Centre, BARI

F. Amin
Wheat Research Centre, BARI

M Mokhlesur Rahman
Wheat Research Centre, BARI

M R Islam
Wheat Research Centre, BARI

M N Alam
Wheat Research Centre, BARI

M A Zaman
Wheat Research Centre, BARI

M M Rahman
Wheat Research Centre, BARI

M J Uddin
Wheat Research Centre, BARI

Abstract/ Executive Summary:

Ten advance lines of wheat along with check varieties Shatabdi and BARI Gom 26 were evaluated at WRC, Dinajpur, Joydebpur, Jamalpur, Jessore and Rajshahi in RCB factorial design with three replications. The trial was planted under irrigated timely sown and irrigated late sown conditions. The genotypes were evaluated for yield and yield components, heading, maturity, disease reaction, sterility, visual grain quality, etc. The effect of sowing time, location and genotypes and their different interaction levels were significant for most of the traits. The genotype BAW 1200 produced the highest TGW (61.8 g) under ITS condition in Dinajpur location and the genotype BAW 1196 produced the lowest thousand grain yield (TGW) (26.4.4 g) at Jamalpur location in ILS condition. The highest %yield loss due to late seeding was recorded in in check variety Shatabdi. The lowest yield loss due to late seeding was recorded in BAW 1205 (4%). Considering the overall yield and other characters the genotype BAW 1194, BAW 1195, BAW 1200, BAW 1202 and BAW 1203 were finally selected for inclusion in Candidate Variety Demonstration (CVD) next year.

Keywords: Evaluation, Multi-location, Farmers’ field, Wheat.

Location: Dinajpur, Joydebpur, Jamalpur, Jessore and Rajshahi

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Variety and Species

Commodity: Wheat

Objectives:

,The objective of this trial was to evaluate the performance of the advance lines compared to the existing check varieties and to select the promising lines for further evaluation in multi-location trials at farmers’ field.

Methodology:

The trial was conducted with eight promising lines were selected from PYT and AYT of 2012-13. The varieties Shatabdi and BARI Gom 26 were used as checks. The experiment was laid out in RCB factorial design with three replications at five locations (Dinajpur, Jamalpur, Jessore, Joydebpur and Rajshahi). The trial was sown under irrigated timely sown (ITS) and irrigated late sown (ILS) conditions in each location. Seeds were sown continuously in 5m long 8-row plots with a row spacing of 20 cm. Recommended cultural practices were followed to raise the crop with irrigation. Data were recorded on different agronomic characters, diseases, sterility, 1000-grain weight and visual seed characteristics. At maturity, the middle five-meter long five rows were harvested to estimate yield. The double-digit disease scores were converted to percent diseased leaf area (% DLA) for BpLB disease. The collected data were analyzed using Cropstat program.

Source of Information: Annual Research Report, Wheat Research Centre, BARI--2013-14

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The effect of seeding times revealed that all traits were significantly influenced by seeding time. Days to maturity were earlier at late sowing condition. The number of spikes m^-2 was significantly higher at late sown condition. The TGW was higher at ITS condition compared to ILS condition. The higher yield was achieved under ITS than ILS condition. The effect of locations on yield showed that the height yield was achieved at Jamalpur (4626 kg ha^-1) followed by Dinajpur (4366 kg ha^-1) and Jessore (4352 kg ha^-1). The lowest yield was recorded at Rajshahi (3934 kg ha^-1). All the tested genotypes matured earlier than both the check variety (Table 1.1.8.4) except BAW 1200. The genotypes BAW 1200 matured earlier than Shatabdi but later than BARI Gom 26. The highest spike m^-2 was recorded in BARI Gom 26 and BAW 1194 but which was statistically similar to Shatabdi and BAW 1206. All the genotypes under study had higher 1000-grain weight than both the check variety. The highest 1000-grain weight was recorded in BAW 1202 which was statistically similar to BAW 1203, BAW 1205 and BAW 1206. The lowest 1000-grain weight was showed in Shatabdi. All the selected genotype out yielded both the check varieties except BAW 1203. The genotype BAW 1203 had statistically similar yield to the check variety. The days to heading was significantly influenced by locations, sowing times, genotypes and their interactions.The highest days to heading was observed in Shatabdi under ITS condition at Dinajpur. All the genotypes under this studied had earlier days to heading than check variety Shatabdi. The highest days to maturity was recorded in Shatabdi under ITS condition at Dinajpur. All the genotypes tested in this trial had earlier than check variety Shatabdi. Considering the overall performance over locations, seeding times and genotypes and their different interactions on yield and other characters disease reactions and visual grain quality the genotypes BAW 1194, BAW 1195, BAW 1200, BAW 1202 and BAW 1203 were finally selected for further evaluation in candidate variety Demonstration trials in next year.

Knowledge Management: Report/Proceedings