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为探讨比较A1和A3两种细胞质甜高粱品种在抗倒性上的异同点,以便有针对性地培育抗倒伏品种,解决生产中的倒伏问题。试验应用5个典型的A1细胞质品种和5个A3细胞质品种为试材,对其自然倒伏率、倒折率,各倒伏影响因子以及抗倒参数进行了比较与分析,同时进行了拉力试验。结果表明:在自然条件下,A3细胞质品种的倒折率和倒伏率均明显低于A1细胞质品种;A3细胞质品种茎秆充实度和茎秆壁厚度显著高于A1细胞质品种;A3细胞质品种较A1细胞质品种在抗弯能力上有较大的优势;用拉力秤将茎秆拉至偏离竖直方向45°、60°和75°时,A3细胞质品种所用的拉力可分别比A1细胞质品种高16.4%、15.6%和18.6%,回复后角度分别低3.70°、3.96°和4.08°。说明A3细胞质品种的抗倒潜力很大,用做生物乙醇的原材料栽培有明显优势,有必要进行进一步研究。
In order to explore the similarities and differences in the lodging resistance of sweet sorghum cultivars A1 and A3, this study aimed to breed lodging resistant cultivars and solve the problem of lodging in production. Five typical A1 cytoplasm varieties and five A3 cytoplasm varieties were used as test materials to compare and analyze the natural lodging rate, the rate of lodging, the influence factors of each lodging and the anti-lodging parameters, and the tensile test was carried out at the same time. The results showed that under the natural conditions, the percentages of lodging and lodging of A3 cytoplasm were significantly lower than those of A1 cytoplasm. The stem parenchyma and stalk wall thickness of A3 cytoplasm were significantly higher than those of A1 cytoplasm. The cytoplasmic varieties had a greater advantage in bending resistance. When the stalks were pulled to 45 °, 60 ° and 75 ° from the vertical direction, the tensile force used by the A3 cytoplasm could be respectively 16.4% higher than that of the A1 cytoplasm. , 15.6% and 18.6%, respectively. After the reply, the angles were 3.70 °, 3.96 ° and 4.08 ° lower respectively. This shows that the resistance to down-regulation potential of A3 cytoplasm is very large. It is obvious that it is used as raw material for bio-ethanol cultivation and further study is necessary.