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在印度 Lucknow 用74个 Co 品系甘蔗(1968—1974年),81个外国品种和来自7个双亲杂交的2824个不同无性系评价其宿根能力。在 Co 品系和外国品种宿根蔗测试中,Co7321优于 Co1148。在双亲杂交无性系的新植和宿根研究中,选出7个 Colk 品种,也就是 Colk7701、Colk7702、Colk7707、Colk7708、Colk7710。Colk7701在新植蔗中显著优于 Co1148,而其宿根蔗的产量则相等,但蔗糖的百分率无论在新植蔗及宿根蔗中,Colk7701均高于 Co1148。对于良好宿根能力的选择,建议在早期无性系选择的宿根蔗中进行,以便获得更加理想的无性系。本文还进一步提出了在宿根中通过增加株丛间距离和移植较密的株丛补足其缺株数,并通过发挥其自身调节能力而增加产量。
In Lucknow, India, their perennial capacity was evaluated with 74 Co-cane sugarcane (1968-1974), 81 foreign breeds and 2,824 different clones from a cross between seven parents. Co7321 outperformed Co1148 in Co-cultivars and foreign rattan crops. Seven new Colk cultivars, Colk7701, Colk7702, Colk7707, Colk7708, and Colk7710, were selected for the new plantation and rooting studies of the clonal hybrid clones. Colk7701 was significantly better than Co1148 in new plant sugarcane, while the yield of its perennial sugarcane was equal, but the percentage of sucrose was higher than that of Co1148 in both sugarcane and sugarcane. For good selection of perennial ability, it is advisable to proceed with clonal-selected perennial sugarcane in order to obtain more desirable clones. In this paper, we further propose to increase the number of missing plants by increasing the distance between plants and the more densely transplanted plants in the dormant roots, and increase the yield by exerting its own regulatory capacity.