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选用 1 2个籼型水、陆稻品种进行水、旱处理 ,在全生育期共测定其 39个性状和单株产量 ,并运用DPS数据处理系统对各类性状进行单因变量逐步回归与灰色关联分析。结果表明 :(1 )以旱作栽培时的抗旱性状为指标 ,综合入选单株有效穗数、穗茎粗、倒二节间长、每穗实粒数 ;(2 )以各性状旱 /水为指标 ,综合入选性状为谷粒宽比、有效穗数比、剑叶长比、实粒数比、穗茎粗比 ;(3)采取模糊隶属函数法对 (1 ) (2 )入选性状进行了抗旱性综合评价。认为上述性状可作为籼稻抗旱性鉴定的指标加以试用。
A total of 12 traits of indica and upland rice were selected for water and drought treatment. 39 traits and plant yield were measured during the whole growth period. DPS data processing system was used to conduct single-factor regression and gray regression Correlation Analysis. The results showed as follows: (1) According to the drought-resistant characters of drought-cultivation, the number of effective panicles per plant, As the index, the comprehensive traits selected were grain width ratio, effective spike ratio, ratio of flag leaf length to grain ratio, and ratio of ear stem to stem. (3) Fuzzy membership function method was adopted to select the traits (1) (2) A comprehensive evaluation of drought resistance. The above traits are considered as an indicator for drought resistance identification in indica rice.