Look at the uniformity. Hybrid rice seeds mixed with other rice have irregular grain shapes. The mixed male parent or other japonica rice was significantly slimmer and fuller than the hybrid rice seed, while the japonica rice was more rounded.
Second look at the color of the chaff. The seeds of the hybrid rice seedlings have slightly uneven tan and other physiological variegated colors, while the paternal and maintainer grain colors are relatively uniform. Maintainer lines and other hybrid grains have higher transparency than hybrid rice seeds, and the hull ratio hybrid rice The seeds are smooth.
Three look at the stigma trails. The grains of non-hybrid rice are mostly self-pollinated, the stigma of the pistil is not exposed, and the stigma remains in the interior of the chaff. The peeling of the chaff reveals a light black stigma on the top of the rice. The hybrids were cross-pollinated and the stigma was exposed. After careful observation of the gaps between the inside and outside of the grains, a small black spot, namely the stigma, was found. This is an important basis for identifying hybrid rice seeds and other rice grains.
Four to see the determination of staining. The method is to cut the rice husks longitudinally into two halves from the embryonic part, wash each half into the red ink diluted 60 times, immerse it in the red ink, and remove it with clean water after 1 hour, if the embryos are not stained or stained. Shallow, proves seed vigor; if the stain is deeper, it proves that the seed has lost its vitality. In this way, the non-germinated spoilage seeds in the hybrid seed can be identified.
See seed purity at five. Hand-cut seeds, solid particles such as soil particles, sand particles and other impurities between the palm of the fingers, fingers stained with fine powder, proved that the seed purity can not meet the national standards (99%).
Six to see the seed moisture content. A simple method is to bite the grain with a tooth. If there is a sharp noise, the water content is basically normal. If there is no crackling or the grain is irregular, the water content of the seed is generally higher than the normal standard (11.5%).
Seven to see the seed "three certificates." All seeds with seed business licenses, quality certificates, and pest and disease phytosanitary certificates for plant protection departments are high quality hybrid rice seeds. Otherwise it is a fake hybrid rice seed.
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