Ii you 98 (Rice)

The applied variety IIyou 98 (formerly Kangyou 98) is an indica hybrid rice, which belongs to OryzasativaL in plant taxonomy. II you 98 was bred by crossing Taichung local No. 1 (TN1) as female parent and DV85 as male parent to improve the main economic characters, but still carrying Xa-7 gene. TD;, an intermediate resistance source with Xa-7 gene, was crossed with TD as female parent and Minghui 63 as male parent. The character was similar to that of Minghui 63, but the restorer line Kang Hui 98 with good recovery, strong combining ability and high resistance to bacterial blight in F1 was selected. Finally, the hybrid seeds of II you 98 were prepared with II-32A as female parent and Kanghui 98 as male parent.

Characteristic II you 98 has medium to many leaves on main stem, long ear length, good ear protruding, intermediate panicle type, secondary branches gathering, ear standing shape drooping, stem latent bud vitality medium to high, glume hairs few, longest awn length short, glume color yellow, glume tip color purple, more grains per panicle, seed setting rate high to very high, shedding medium; glume length, glume color yellow culm yellow Grain length is medium to long, grain width is medium to wide, grain shape is oval, grain weight is high; in brown rice length, brown rice width, brown rice shape spindle-shaped, seed coat white. Compared with the control variety Shanyou 63, the specificity of II you 98 was as follows: the length of flag leaf was longer, the width of flag leaf was medium to wide, and the angle of flag leaf was erect; among the length of flag leaf, the width of flag leaf and the middle angle of flag leaf, the secondary branches of II you 98 gathered, and Shanyou 63 had more secondary branches.