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1986～1991年用25个品种代表四川5个甘蔗品种推广时期,研究了品种更替与性状演变的关系。结果表明:锤度、株高、茎径、单茎重、亩含糖量和叶面积等性状随品种的更替逐步提高;分蘗率、宿根发株数、蔗产量、叶长、节间长度等性状趋于稳定;前期生长速和节间数的变化不大。由于亩有效茎数的演变呈逐步减少的趋势,虽然其它产量因素有所改进,但甘蔗亩产量的改进则不明显。今后四川甘蔗品种选育中应主攻亩有效茎数的提高。此外,根据四川是霜冻蔗区的特点应进一步提高品种的宿根性。相关分析结果表明,除可对宿根性进行直接选择外,通过亩有效茎数,分蘗率的多少可对宿根性进行间接选择。
From 1986 to 1991, 25 cultivars were used to represent the popularization period of 5 sugarcane varieties in Sichuan, and the relationship between variety alternation and traits evolution was studied. The results showed that the traits such as brix, plant height, stem diameter, single stem weight, mu sugar content and leaf area gradually increased with the replacement of cultivars; the tillering rate, the number of pests per plant, the yield of cane, the length of leaves and the length of internodes Stable; early growth rate and internode number changes little. Due to the gradual decrease trend of the effective stalk number per acre, the yield improvement of sugarcane is not obvious although other yield factors have been improved. Future Sichuan sugarcane varieties breeding should be mainly to improve the effective number of acres of stalks. In addition, according to the characteristics of Sichuan Province is to frost cane area should further enhance the variety of rooting. Correlation analysis showed that in addition to the direct selection of perennial, the number of effective stalks per acre and tillering rate can be used to indirectly select the root.