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Agronomy QUESTION #2052
Question 1
The concept of 'crop ideotype' in modern agronomy, first proposed by Donald (1968), refers to:
  • A crop variety selected solely for disease resistance in a specific environment
  • A hypothetical plant model with a defined combination of morphological and physiological traits designed to maximize yield in a specified environment✔️
  • A statistical model predicting crop yield based on soil type
  • A classification system for categorizing crops by their water requirements
Correct Answer Explanation
Donald's ideotype concept proposes designing plant types (ideotypes) with specific trait combinations — e.g., semi-dwarf stature, erect leaves, high HI, responsive to inputs — that theoretically maximize yield in target environments. This concept underpinned Green Revolution breeding and continues to guide modern crop improvement programs.