Study of Characteristics Floral and Morphological Hybrid Rice Parental Lines on Different Seeding Date

Abstract

This research used four female inbred lines (eMS) and seven male inbred lines (restorer). The purpose was to study the flower characteristic and plant morphology of female inbred lines (eMS) and male inbred lines (restorer) of rice hybrid in relation to different planting period. This research was conducted at the Institute for Agricultural Technology, Province of Banten, Indonesia, from November 2012 to September 2013. The experiments usedrandomized complete block design with three replications. Each replication consisted of five plants so that the total experimental unit was 165 plants for one planting period. During this research was used four planting period namely: 1) November 2012 to February 2013, 2) January - April 2013, 3) April - July 2013 and 4) June - September 2013.The results showed that there was interaction between planting period and female inbred lines (eMS) in panicle excertion, stigma excertion, the duration of the flower opening, and the flower opening angle. The best planting period of all CMS lines is on June-September, where at the time the air temperature and the sun light duration was higher, while the relative humidity, rainfall and the number of rainy day is lower as compate to another planting period. The restorer lines were more stable as compared to CMS lines. During four times of planting period, restorer lines expressed consistently character (no variation between planting period) except in lower opening duration which influenced by the sun light duration. The pairof hybrid riceparental of Hipa 8, Hipa 5, Hipa 11 and Hipa 14 SBU showed the suitability on all observed variables.