Pingmai 998 is a high-yielding and versatile wheat variety developed by the Pingdingshan Academy of Agricultural Sciences through crossbreeding of 19 progenies using Shanyou 225 and Yumai 21 (also known as Zhou Mai 9) as male parents. This new variety is characterized by strong resistance to lodging and diseases, making it an ideal choice for farmers looking for reliable performance under various conditions.
The variety is a mid-winter type with a growth cycle of approximately 228 days. It features semi-erect seedlings that grow vigorously with strong tillering capacity. The plant height is moderate, around 76 cm, which contributes to its excellent lodging resistance. The plant structure is semi-dense, with leaves that stand upright, waxy stems, and short internodes beneath the ear. The ears are spindle-shaped, neatly arranged, and exhibit good yellow ripening. The grains have long awns, are hard, full, and feature a dark embryo. On average, each ear contains about 411,000 spikes, with 35.3 grains per ear and a grain weight of 43.3 grams. It also shows good resistance to leaf blight, enhancing its overall disease tolerance.
In the 2006–2007 regional trials conducted in Henan Group II for high-fat winter wheat, Pingmai 998 achieved an average yield of 513.1 kg per mu, which was 3.93% higher than the control variety Yumai 49. In the following production trial from 2007 to 2008, it yielded an average of 527.9 kg per mu, surpassing the control by 6.1%. These results highlight its strong potential for commercial use.
For cultivation, Pingmai 998 is suitable for medium to high fertility fields in the middle and early planting seasons across the province, except in southern rice and buckwheat areas. The recommended sowing period is between October 5th and 15th. For high-fertility fields, the seeding rate should be 6–9 kg per mu, while for moderate or low-fertility soils, the rate can be slightly increased to ensure optimal growth and yield.
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