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Trihybrid Crosses02:27

Trihybrid Crosses

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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...
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A Contrast of Three Inoculation Techniques used to Determine the Race of Unknown Fusarium oxysporum f.sp. niveum Isolates
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Efficient Characterization of Tetraploid Watermelon.

Na Zhang1, Yaning Bao2, Zhouli Xie3

  • 1Institute of Crop Science, Wuhan Academy of Agricultural Sciences, Wuhan 430345, China. zhangna@wuhanagri.com.

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|October 19, 2019
PubMed
Summary

Researchers developed a new, efficient method for watermelon polyploidy identification using real-time quantitative PCR (qPCR). This technique accelerates analysis and offers comparable accuracy to flow cytometry (FCM), aiding watermelon breeding programs.

Keywords:
diploidflow cytometryqPCRtetraploidwatermelon

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Area of Science:

  • Plant Science
  • Genetics
  • Agricultural Science

Background:

  • Watermelon (Citrullus lanatus) is a globally cultivated economic crop.
  • Accurate ploidy determination is crucial for watermelon breeding and production efficiency.
  • Traditional ploidy detection methods are time-consuming, costly, and inefficient.

Purpose of the Study:

  • To develop a simplified and accelerated method for polyploidy identification in watermelons.
  • To establish a reliable quantitative PCR (qPCR) technique for watermelon ploidy analysis.
  • To provide a more efficient alternative to traditional methods for ploidy detection.

Main Methods:

  • Confirmation of watermelon ploidy using traditional tetraploid morphological features and flow cytometry (FCM).
  • Development of a real-time quantitative PCR (qPCR) technique.
  • Quantification of the conserved 5S rDNA sequence and its copy numbers using qPCR.

Main Results:

  • The developed qPCR technique requires minimal sample collection.
  • The qPCR method demonstrates comparable accuracy to flow cytometry (FCM).
  • The new technique significantly accelerates the polyploidy identification process.

Conclusions:

  • A reliable and efficient qPCR-based method for watermelon polyploidy identification has been established.
  • This technique offers a faster and less sample-intensive alternative to traditional methods.
  • The study provides a valuable new tool for accelerating watermelon breeding and production.