Best Viewed in Mozilla Firefox, Google Chrome

Maintaining the purity of TGMS lines

PrintPrintSend to friendSend to friend

• Selecting about 100 plants with the typical characteristics of the original EGMS lines and planting them separately in pots.

• Transferring the pots at the sensitive stage into a glasshouse with a controlled temperature or phytotron where appropriate temperature and photoperiod are set.

• Monitoring pollen sterility critically at the time of heading and selecting plants with 100 per cent sterility.

• Ratooning selected plants in suitable short-photoperiod/low temperature conditions and collecting their selfed seed (nucleus seed).

• Bulking nucleus seed from each selected plant in a row and comparing the agronomic characters and fertility or sterility traits of the selected rows or lines with those of the original line.

• Selected lines that are identical/ similar to the original ones are harvested. The harvested seed is also called nucleus seed.

• Multiplying nucleus seed to produce breeder seed and multiplying breeder seed to produce foundation seed of EGMs lines.

File Courtesy: 
Agro Techniques for Hybrid Rice Cultivation and Seed Production - 2005, DRR Training Manual
Copy rights | Disclaimer | RKMP Policies