GS 400 is a mid-late maturity corn (Zea mays L.) hybrid intended for grain production. The plant is characterized by high stature and broad leaves, with a rounded tip of the first leaf and a medium angle between the leaf blade and stem. The tassel has a main axis significantly longer than lateral branches, forming a medium or large angle with them. Primary lateral tassel branches are long and slightly curved, with numbers varying from medium to large. The ear is long, medium thickness, slightly conical, with strong anthocyanic pigmentation of the cob. The kernel is dent-shaped, with a yellow upper part and yellow-orange lower part. The hybrid shows good disease resistance: in field conditions, it is lightly affected by bacterial blight and ear Fusarium, and is minimally damaged by corn borer. The vegetative period is approximately 116 days, which is 5 days less than the standard. The average grain moisture at harvest is around 19.9%, lower than the standard. The hybrid’s yield in the North Caucasus region reaches 62.8 c/ha, with maximum values up to 87.8 c/ha, significantly exceeding standard benchmarks. GS 400 is suitable for cultivation under various climatic conditions and ensures a stable high grain yield. Due to its morphological traits and resistance to pests and diseases, this hybrid is a profitable choice for farmers focused on obtaining high-quality grain with good yields.
