Detection of corn and its products/genetically modified ingredients

Zea mays L. (scientific name: Zea mays L.) is a plant in the family Poaceae and genus Zea, commonly known as corn. Annual tall herbaceous plant. The stem is erect, usually unbranched, and 1-4 meters tall. Leaf sheaths with transverse veins; Leaf tongue membranous, approximately 2 millimeters long; The leaves are flat and wide. The terminal male panicle is large, and the male spikelets are twinned, reaching 1 cm in length. The caryopsis is spherical or oblate, usually 5-10 millimeters long. The flowering and fruiting period is autumn. Native to Central and South America. Widely cultivated in tropical and temperate regions around the world. Corn has high nutritional value and is an excellent grain crop; It is also one of the indispensable raw materials for food, healthcare, light industry, chemical industry, etc. In August 2018, the Ministry of Finance, the Ministry of Agriculture and Rural Affairs, and the China Banking and Insurance Regulatory Commission issued a notice to include maize crop seed production in the central government's agricultural insurance subsidy catalog. Shu Shu likes light and is not tolerant of shade, making it a short-day plant. Maize prefers temperature, with a suitable growth temperature of 22-30 ℃, seed germination temperature of 6-10 ℃, jointing temperature of 15-27 ℃, flowering temperature of 25-26 ℃, and grouting temperature of 20-24 ℃. Temperature maize is a warm loving crop that requires higher temperatures throughout its entire growth period. The biological effective temperature of corn is 10 ℃. Seed germination requires 6-10 ℃, with slow germination below 10 ℃ and vigorous germination at 16-21 ℃. The optimal temperature for germination is 28-35 ℃, and germination stops above 40 ℃. During the seedling stage, it can withstand short-term low temperatures of -2 to 3 ℃. The elongation stage requires 1527 ℃, the flowering stage requires 2526 ℃, and the filling stage requires 2024 ℃. Different corn varieties also have different temperature requirements, with early maturing varieties in China requiring a cumulative temperature of 2000-2200 ℃; Medium maturity varieties 2300-2600 ℃; Late maturing products and 2500-2800 (3000) ℃. Most of the world's corn production areas are concentrated within the range of July's isotherm of 21-27 ℃ and a frost free period of 120-180 days. Corn is a short day plant that can bloom and fruit under short day conditions (8-10 hours). The spectral composition of light has a significant impact on the development of maize. According to research, maize develops faster under short wave light such as blue during the day, while it develops faster under long wave light such as red in the morning or evening. Corn is a C4 plant with strong photosynthetic capacity and high saturation point of light. Generally, the photosynthetic intensity of corn is 35-80 mg CO2/dm2 · leaf · hour. Corn plants are tall and have large leaf areas, therefore requiring more water

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