甘蔗引进品种的稳定性分析

采用 Eberhart 和 Russell 的方法,对24个国内外甘蔗品种在福建蔗区的七个生态环境的6个主要经济性状表现进行稳定性分析。根据不同地点的平均表现,回归系数和回归离差,把品种划分为不同的适应类型。分析结果表明,福引79-8是对所有环境适应良好的高产高糖早熟品种;福引79-9表现出对良好环境的特殊适应,是个产量潜力高的中熟高糖品种;这两个品种推广后,预期可以取得显著的经济效果。福引82-17被发现为中熟高产高糖的中细茎品种,具有对良好环境的特殊适应;福引82-41被认为是普遍适应的早熟高产高糖品种;这两个品种尚待进一步扩大表证示范,再行确定其推广价值。福引79-11和福引79-7属于低产稳定型品种。研究表明,稳定性分析是评价甘蔗品种丰产性和适应性的有效手段。事实证明,本文的理论分析和田间实地鉴定的结果是高度一致的。

STABILITY ANALYSES OF INTRODUCED SUGARCANE VARIETIES

Twenty four sugarcane varieties of domestic and exotic origin were grown at Seven ecological environments in Fujian sugarcane region.Stability analyses were carried out on six main economic characters by using Eberhart and Russell's method.Varieties were grouped into different patterns of adap- tation based on mean performance across locations.regression coefficient and deviatin from regression.The results indicated that FIN(Fujian,In- troduced Number)79-8 was an ideal carly matcurity varicty with high canc and sugar productivity,had a constant stability over all environments.FIN 79-9 recorded the specific adaptation to favorble environmments,was a mid-maturity variety and had high sugar yied and potential of high cane productivity.Sinificant econmic benefit can be expected after the two varieties are released to commercial cultivation.FIN 82-17 given good res- ponse to favorable environments was found to be a mid-maturity variety and have high cane and sugar productivity,however,its diameter was thin and unstable.FIN 82-41 was recognized as a early maturity variety,it had high cane and sugar productvity and general adaptation to all envitonments. The commercial value of the two varieties will depended upon their further identification and demonstration.FIN 79-11 and 79-7 were grouped into category that showed stable and low cane yield.From the results it was concluded that stability analysis was an efficient methd for evaluating the productivity and adaptability of sugarcane varieties.It was proved by the fact that the theoretic analyses in this paper was higly consistant with the results of ptactical identification in the field.