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Fourth Wheat Stress Adaptive Trials Yield Nursery (4th Satyn)

M. FARHAD
Wheat Research Centre, BARI

N. C. D. BARMA
Wheat Research Centre, BARI

M. A. HAKIM
Wheat Research Centre, BARI

N. A. SIDDIQUIE
Wheat Research Centre, BARI

M. A. ALAM
Wheat Research Centre, BARI

K A M M RAHMAN
Wheat Research Centre, BARI

Abstract/ Executive Summary:

The nursery was consisted of 28 elite genotypes of wheat. It was grown under late sowing condition. Considering different morphophysiological characters, yield contributing characters and yield performance eight genotypes viz. Entry-1, Entry-2, Entry-5, Entry-9, Entry-11 Entry-13, Entry-18 and Entry-26 were found promising under the stress condition

Keywords: Heat stress, Adaptive traits, Wheat

Location: Dinajpur and Rajshahi

Start Date: 00-00-2014

End Date: 00-00-2015

Program Area: Variety and Species

Commodity: Wheat

Objectives:

To find potential stress adaptive traits under heat stress and to select promising genotypes that perform better under the stress condition.

Methodology:

The nursery consist of 28 genotypes was tested at WRC, Dinajpur; and RWRC, Rajshahi. The nursery was shown on 22 December in Dinajpur and 21 December in Rajshahi. The experiment was laid out in Alpha-lattice design with two replications. The unit plot size was 2.5 m long with 6 rows spaced at 20 cm. Fertilizers were applied @ N₁₀₀ P₂₆ K₅₀ S₂₀ B₁ kg ha^-1. All the fertilizers and two-third of urea were applied during final land preparation and one-third of urea was top dressed after first irrigation. All agronomic practices have been done proper time for better yield performance. The data were recorded on Canopy temperature at vegetative stage(CT.VG) and Grain feeling stage (CT.GF), Leaf chlorophyll content (CHL), Area under curve for senescence development (AUC-SD), Heading days(HD), Maturity days(MD), Plant height in cm (PH), number of spikes per plot (SP.PL), Number of grains per Spike (GR.SP), Spikelet per spike (SPL.SP), 1000-grain weight in grams (TGW) and Biomass of whole plot (BMS). Canopy temperature was measured by a hand held Infrared thermometer (IRT). Leaf chlorophyll was measured by hand held SPAD meter (Spectrum Technologies Inc., Plainfield,IL, USA). AUC-SD was calculated from NDVI (Normalized Difference Vegetation Index) value. The GreenSeeker® handheld crop sensor is an active light source optical sensor that is used to measure plant biomass and display as NDVI. At maturity, the whole plot was harvested to estimate grain yield. Data were analyzed by ANOVA using STAR, version 2.0.1. (2014) and CropState 7.2 (2007).

Source of Information: Annual Research Report, Wheat Research Centre, BARI--2014-15

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

All the studied traits showed significant variation in two different locations. In Dinajpur, the genotypes took longer time for heading and maturity and were taller than genotypes grown in Rajshahi. Canopy temperature at grain filling stage was lower but higher in vegetative stage in Dinajpur. Leaf chlorophyll content, measured as SPAD value, was higher in Dinajpur than Rajshahi. The genotypes produce higher biomass in Dinajpur, although Harvest Index were lower than Rajshahi. Yield and yield contributing characters was significantly higher in Dinajpur than Rajshahi except 1000 grain weight. The genotypes had significant variation for different morpho-physiological traits except canopy temperature at vegetative stage. Furthermore, yield and yield contributing characters also varied significantly from genotype to genotypes. Eight genotypes viz. 1,2,5,9,11 13, 18 and 26 had selected under heat stress condition.

Knowledge Management: Report/Proceedings