Chapter4 Plant Reproduction

Types of Pollination

• Self-pollination

  • Pollen grains transferred to the stigma of the same flower

• Cross-pollination

  • Pollen grains transferred to the stigma of another flower on a different plant of the same species

• Pollinating Agents

  • Animals and Insects

    • Pollen sticks on beak or body of animals

    • Characteristics of animal/insect-pollinated flowers

      • Big, colorful petals

      • Nectar, pleasant smell

      • Rough, sticky pollen grains

    • Examples: durian, rambutan, hibiscus

  • Wind

    • Light pollen grains carried by wind to another flower's stigma

    • Characteristics of wind-pollinated flowers

      • White or pale petals

      • Long, furry stigma

      • Small, smooth, light pollen grains

    • Examples: corn, grass, paddy

• Advantages of Cross-Pollination

  • Resistant to pests and diseases

  • Healthier, adaptable plants

  • New plant varieties, quality seeds

• Innovation of Cross-Pollination in Agriculture

  • Plant and Parent Plants

    • Hybrid Plant

      • Palm Oil

        • Pisifera and Dura

        • Tenera

          • More fruits, thinner shell

      • Papaya

        • Subang 6 and Sunrise Solo

        • Eksotika

          • Sweeter, bigger fruits