Pollination Season-2025

In hybrid rice seed production, GA₃ (gibberellic acid) application and pollination are both critical steps for achieving high seed yield and quality.

**Importance of GA₃ Application:

GA₃ (Gibberellic acid) is a plant growth regulator used during the flowering stage of hybrid rice production, especially for the female parent (CMS line).

Key Benefits:
Enhances Panicle Exertion: Helps the panicle (flower cluster) to emerge fully from the flag leaf sheath, which is often restricted in CMS lines.
Increases Floret Opening: Improves the duration and angle of spikelet opening, which is crucial for successful pollination.

Promotes Synchrony: Ensures better synchronization between the flowering of the male (restorer) and female (CMS) lines.

Boosts Seed Set: Leads to higher outcrossing and seed setting rates.


Timing and Dosage:

Typically applied 1–2 days before peak flowering of the CMS line.

**Importance of Pollination:

Hybrid rice relies on cross-pollination between the male (R line) and female (A/CMS line) parents since the CMS line is male sterile.

Key Aspects:

Male Line Vigour: Healthy and synchronous flowering in the male line ensures abundant and timely pollen supply.

Supplementary Pollination: Techniques like rope pulling or shaking the male plants at peak anthesis can enhance pollen dispersal.

Result of Effective Pollination:

High Seed Yield,Seed Quality(Uniform pollination helps in producing viable, uniform hybrid seeds.)