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Related Concept Videos

Responses to Drought and Flooding02:41

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
Trihybrid Crosses02:27

Trihybrid Crosses

Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal chance to...
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Plant Breeding and Biotechnology

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Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
Dihybrid Crosses01:18

Dihybrid Crosses

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High Throughput Image-Based Phenotyping for Determining Morphological and Physiological Responses to Single and Combined Stresses in Potato
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Phenotyping transgenic wheat for drought resistance.

Carolina Saint Pierre1, José L Crossa, David Bonnett

  • 1CIMMYT, Texcoco, Mexico. c.saintpierre@cgiar.org

Journal of Experimental Botany
|January 4, 2012
PubMed
Summary

Screening transgenic wheat for drought adaptation requires controlled conditions. While greenhouse trials showed improved recovery, field results varied, with some water use efficiency (WUE) lines demonstrating stable yields.

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Last Updated: May 26, 2026

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Published on: April 17, 2015

Area of Science:

  • Agricultural Science
  • Plant Biotechnology
  • Genetics

Background:

  • High-throughput phenotyping is essential for identifying drought-tolerant crops.
  • Evaluating transgenic events for drought adaptation is challenging due to biosecurity restrictions on field trials.

Purpose of the Study:

  • To develop realistic greenhouse protocols for screening drought adaptation in transgenic wheat.
  • To assess the performance of transgenic DREB1A-wheat events under controlled drought stress and field conditions.

Main Methods:

  • Transgenic wheat events expressing DREB1A were screened under greenhouse conditions for survival, recovery under severe drought (SURV), and water use efficiency (WUE).
  • Field trials were conducted to evaluate grain yield and performance across different environmental conditions.

Main Results:

  • Greenhouse experiments demonstrated that transgenic wheat events exhibited enhanced recovery after severe water stress.
  • Transgenic lines generally did not outperform controls in grain yield under field drought conditions.
  • Events selected for WUE showed acceptable to higher yields under well-irrigated conditions and stable performance across environments.

Conclusions:

  • Controlled greenhouse screening protocols can effectively identify transgenic wheat with improved drought stress recovery.
  • Water use efficiency (WUE) appears to be a key trait for developing stable, high-performing wheat varieties under varying water availability.
  • Further research into WUE-focused transgenic events could lead to more resilient wheat cultivars.