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Related Concept Videos

Yield Criteria for Ductile Materials under Plane Stress01:25

Yield Criteria for Ductile Materials under Plane Stress

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In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
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The Wilcoxon signed-rank test for the median of a single population is a nonparametric test used to evaluate whether the median of a population differs from a specified value. Unlike parametric tests, it does not require data to follow a normal distribution, making it suitable for non-normal or small samples. The test begins by calculating the difference (d) between each observation and the hypothesized median. The absolute values of these differences are ranked in ascending order, with ties...
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Related Experiment Video

Updated: May 5, 2026

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce Lactuca sativa Germplasm Collections
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A new selection criterion for yield in wheat.

V P Kulshrestha1, S Chowdhury

  • 1Genetics Division, Indian Agricultural Research Institute, New Delhi, India.

TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik
|November 19, 2013
PubMed
Summary

High tiller mortality in crops reduces yield. Selecting for moderate tillering genotypes can minimize losses and improve grain production. This strategy is applicable to various cereal crops.

Area of Science:

  • Agronomy
  • Plant Breeding
  • Crop Physiology

Background:

  • Young tiller mortality significantly impacts crop yield, with up to 36.5% loss observed under optimal conditions.
  • Minimizing tiller loss is crucial for enhancing crop productivity and grain yield.

Purpose of the Study:

  • To investigate methods for reducing young tiller mortality.
  • To identify genotypes with moderate tillering suitable for grain production.
  • To develop a modified selection procedure for improved crop yields.

Main Methods:

  • Field experiments were conducted under optimum cultural conditions.
  • Character association analysis was performed for different crop varieties.
  • A modified selection procedure was developed and evaluated.

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Last Updated: May 5, 2026

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Main Results:

  • A significant mortality rate of 36.5% in young tillers was recorded.
  • Moderate tillering in the vegetative phase was associated with higher survival and grain production.
  • Character associations were studied to identify suitable genotypes.

Conclusions:

  • Selecting for genotypes with moderate tillering is a viable strategy to increase yield.
  • A modified selection procedure can effectively minimize tiller mortality and enhance grain yield.
  • The proposed methodology is adaptable for other cereal crops like barley, triticale, and oats.