Performance of Doubled Haploid Elite Rice (Oryza sativa L.) Germplasm for Grain Yield and Associated Traits in Harare, Zimbabwe

Table 3

Grain size and grain shape classification.

Grain size classification
Grain length			Grain shape
Scale	Size (mm)	Class	Scale	GL : GW ratio	Class
1	>7.50	Extra long	1	>3.0	Slender
3	6.60–7.50	Long	3	2.1–3.0	Long
5	5.51–6.60	Medium	5	1.1–2.0	Medium
7	<5.50	Short	9	<1.1	Short

Source: IRRI [36]. GL:GW ratio = grain length/grain width ratio.