Competition among wild rice, landrace, improved cultivar and F1 hybrid rice

Asian wild rice is a hybrid swarm with extensive gene flow and feralization from domesticated rice.

The domestication history of rice remains controversial, with multiple studies reaching different conclusions regarding its origin(s). These studies have generally assumed that populations of living wild rice, O. rufipogon, are descendants of the ancestral population that gave rise to domesticated rice, but relatively little attention has been paid to the origins and history of wild rice itself...

Blast in a Durably Resistant Rice Cultivar

Moroberekan, ajaponica rice cultivar with durable resistance to blast disease in Asia, was crossed to the highly susceptible indica cultivar, C039, and 281 F, recombinant inbred (RI) lines were produced by single seed descent. The population was evaluated for blast resistance in the greenhouse and the field, and was analyzed with 127 restriction fragment length polymorphism (RFLP) markers. Two ...

Analysis of genetic diversity and trait correlations among Korean landrace rice (Oryza sativa L.).

This study analyzed 394 Korean rice landrace accessions, including 93 waxy varieties, for polymorphisms using 29 simple sequence repeat (SSR) markers. In total, 381 alleles served as raw data for estimating the genetic diversity (GD) and population structure. The number of alleles per locus ranged from 3 to 44 (average = 13.14). The expected heterozygosity and polymorphism information content (...

RICE QUALITY AND PROCESSING Functional Properties of Commingled Rice-Cultivar Lots

Commingling of rice cultivars commonly occurs during harvest, drying, and storage operations. As different cultivars often have different functional properties, there is a need to study the impact of commingling on these properties. Two long-grain, hybrid cultivars, Clearfield (CL) XL745 and CLXL729, and two long-grain, pure-line cultivars, CL151 and Wells, were used to prepare hybrid/pure-line...

Potential Health Benefits of Wild Rice and Wild Rice Products: Literature Review