Metroglyph analysis of diversity in some quality components in rainfed rice (Oryza sativa L)
Abstract
One hundred and six indigenous cultivars (mainly from plateau region of Bihar) of Oryza sativa L. were evaluated to study the extent of variation in physico-chemical and cooking quality traits. The study revealed high variability for alkali digestion value and head rice recovery; moderate for grain shape and water up take. About 50 percent cultivars possessed short, bold and red kernels. Sixteen genotypes exhibited desirable combination of intermediate content of amylose and gelatinization temperature. Twenty five per cent cultivars also exhihited high water uptake (more than 300 ml). Metroglyph analysis indicated that 106 genotypes could be grouped into six complexes; the largest being I and II with 29 and 24 genotypes respectively. The cumulative index score (IS) varied from 6 (Bagri Black HRC 446) to 12 (Brown Gora, HRC 407). A few traditional cultivars possessed multiple desirable quality traits (IS 11).
