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Effects of date of sowing on the yield and yield components of spring wheat and their relationship with solar radiation and temperature at Ludhiana, Punjab, India

Author: Dhillon, S.S.
Author: Ortíz-Monasterios, I.
Year: 1993
ISBN: 968-6923-14-4
ISSN: 0187-7787
URI: http://hdl.handle.net/10883/1175
Abstract: This Wheat Special Report analyzes the effects of radiation and temperature on the date of flowering and grain yield of spring bread wheat cropped under optimum conditions. The experiments were conducted at Ludhiana, Punjab, India, over 7 years and using a range of genotypes. The optimum flowering date for maximization of wheat grain yields is confirmed to be when the ratio of radiation to temperature (PTQ) is at its maximum. The individual effects of radiation and temperature on yield and yield components at various stages of crop development are also examined. We hope that the concepts validated here will be useful elements of wheat component agronomy in the development of new spring wheat varieties and better agronomic practices for wheat grown under irrigation (Mega-environment 1). This short version (No. 23a) does not include the raw data that may be of interest to some scientists. This information (Le., correlation coefficients for the three genotypes used in the experiments, means averaged across reps, and climatic data) is provided in Appendices 2 through 5, which are included in No. 23b. S.S. Dhillon is an agronomist with the Department of Plant Breeding, Punjab Agricultural University, Ludhiana, India, and J.1. Ortiz-Monasterio R. is an agronomist, with the Wheat Program, Crop Management and Physiology Subprogram, CIMMYT, Mexico.
Format: PDF
Language: English
Publisher: CIMMYT
Serie: CIMMYT Wheat Special Report (WPSR)
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Report
Country focus: India
Region: South Asia
Place of Publication: Mexico
Pages: 33 pages
Serie Number: 23a
Country of Focus: Punjab
Country of Focus: India
Agrovoc: TRITICUM
Agrovoc: SPRING CROPS
Agrovoc: SOWING DATE
Agrovoc: GENOTYPE ENVIRONMENT INTERACTION
Agrovoc: YIELD FACTORS
Agrovoc: SOLAR ENERGY
Agrovoc: HEAT TOLERANCE


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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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