HomeInternational Rice Research Notesvol. 27 no. 1 (2002)

Prospects of two-line hybrid rice breeding in Tamil Nadu, India

A. P. M. Kirubakaran Soundararaj | P Thiyagarajan | S. Arumugachamy | A. Jawahar Ali

Discipline: Agriculture



Chill temperature from panicle initiation to heading is necessary for temperature-sensitive genic male-sterile (TGMS) lines for their self seed set through pollen fertility. Hence, an ideal location or season with favorable temperature is required for breeding new TGMS lines and their own seed multiplication. Tamil Nadu State (TN) in India has high elevation suitable for using the TGMS system to develop two-line hybrid rice. Annually, 2.2 million ha of rice are cultivated in TN, of which 1,000 ha are raised in valleys on the hills under cool climate.