Picking up plants with superior phenotype for further propagation is

Options

A. mass selection
B. Pure line selection
C. Hybrid vigour
D. Introduction

Answer

To answer the question "Picking up plants with superior phenotype for further propagation is," we will analyze the options provided and determine the correct one step by step.

### Step 1: Understand the Question
The question is asking for the term that describes the process of selecting plants based on their superior physical traits (phenotype) for the purpose of further propagation.

**Hint:** Focus on the key terms "superior phenotype" and "further propagation."

### Step 2: Analyze the Options
1. **Mass Selection**: This method involves selecting plants based on their phenotypic traits from a mixed population. The selected plants are then used to produce bulk seeds for the next generation.

**Hint:** Consider whether this option involves selecting based on visible traits.

2. **Pure Line Selection**: This method involves selecting plants that are homozygous and genetically identical. It focuses on self-pollinated plants that are uniform in genotype.

**Hint:** Think about whether this option emphasizes phenotype or genotype.

3. **Hybrid Vigor**: This term refers to the increased performance (such as yield) of hybrids compared to their parents. It does not specifically involve selection based on phenotype.

**Hint:** Reflect on whether this option relates to the selection process described in the question.

4. **Introduction**: This refers to introducing a new plant variety to a new area or locality. It does not involve selecting plants based on their phenotype.

**Hint:** Determine if this option relates to the concept of selection based on traits.

### Step 3: Determine the Correct Answer
After analyzing the definitions:
- **Mass Selection** is the correct answer because it directly involves selecting plants based on their superior phenotypic traits for further propagation.
- The other options (Pure Line Selection, Hybrid Vigor, and Introduction) do not fit the criteria of selecting based on phenotype for propagation.

### Conclusion
The correct answer is **Mass Selection**.

**Final Answer:** Mass Selection

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