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What are the three-line hybrid rice varieties? Detailed introduction to common varieties
The breeding of three-line rice can be said to be the truly pioneering beginning of the utilization of rice heterosis in China. As early as 1973, Yuan Longping's team cultivated the strong-heterosis combination "Nanyou No. 2". At the same time, the "three lines" of China's wild-abortive indica hybrid rice were fully matched
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How to Prevent Sand-Shelled and Soft-Shelled Eggs in Three-Lined Box Turtles
Three-lined box turtles mate and fertilize in March-April each year, and lay and incubate eggs from May to July. A single sexually mature female turtle lays 3-9 eggs per year; the three-lined box turtle has a relatively low egg production among turtles. Improper feeding and management or the influence of other factors can also cause some three-lined box turtles to lay 1-2 eggs, or even a whole clutch, of sand-shelled eggs (with a sandy, non-smooth shell surface) or soft-shelled eggs, affecting the hatch rate and causing certain economic losses to three-lined box turtle farming. 1 Causes of three-lined box turtles laying sand-shelled or soft-shelled eggs a) Lack of eggshell-producing
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Brief Introduction to Zhong 9 You 1176, a New High-Quality Three-Line Hybrid Indica Rice Combination
Zhong 9 You 1176 is a new three-line hybrid indica rice combination developed by the China National Rice Research Institute by crossing Zhong 9A with the high-quality, multi-resistant restorer line R1176, featuring excellent grain quality, good yield potential, strong disease resistance, and excellent overall agronomic traits. 1. Yield: In 2002, this combination was entered in the Zhejiang Province "8812" joint variety trial, with an average yield of 481.49 kg per mu, comparable to the control Shanyou 63; in the 2002 single-season rice large-plot variety comparison at this institute, the yield was 643.5 kg per mu, an increase of 6.90% over the control Shanyou 63
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