Agronomic diversity among rice (Oryza sativa L.) lines in a germplasm collection in Greece [On-line]
2001
Ntanos, D.A. | Koutroubas, S.D. (National Agricultural Research Foundation, Kalochori-Thessaloniki (Greece). Cereal Institute)
Field experiments were carried out in order to study the diversity in morphophysiological characteristics of rice genetic material preserved in collections of 5 rice producing countries of the European Union. A total of 334 lines was studied from 1966 to 1998. The experiments were carried out at the farm of the Cereal Institute at Kalochori-Thessaloniki. Each line was sown in a single plot that were 3 m long and consisted of 3 rows 0.25 m apart. The time to heading ranged from 60 to 142d and the time to maturity from 109d to 170d. Most of the lines were resistant to lodging and to shattering. Very useful genetic material was found for the characteristic "panicle leaf habit". All the lines were interesting as for the characteristic "panicle type". Great variability was shown for "panicle length" and "plant height" that ranged from 10 to 27 cm and from 57 to 155 cm, respectively. Most of the lines tested showed well-exserted panicle. The glumes were less than grain in all lines. The majority of the lines did not have apiculus color. Differences among lines were observed for the characteristic "hull pubescence", but the majority of them had intermediate hull pubescence. There was less variability for the characteristic "awning". Results indicate that the genetic material studied had great variability that could be exploited in the breeding programmes
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