Table 1.
Morphological changes associated with domestication in rice.
Trait | Wild rice | Domestic rice |
---|---|---|
Plant height | Tall | Medium to short |
Growth habit | Creeping | Erect |
Tiller number | Multiple spreading tillers | Reduced tillers |
Breeding system | Outbreeding | Self-fertilized |
Yield | Low | High |
Seed quality | Non-glutinous | Glutinous |
Seed dormancy | High seed dormancy | Low seed dormancy |
Seed shattering | High shattering | Non-shattering |
Floral structure | Long anthers long stigma | Short anthers short stigma |
Panicle shape | Open panicle | Closed panicle |
Grain size | Small | Variable |
Awns | Long awns | Short awns |
Hulls | Dark/black coloured | Straw coloured |
Pericarp/seed coat | Pigmented | Most Asian cultivars lack pigmentation, but many African cultivars retain |