大麦不同品种不同播期幼穗分化时期形态诊断研究

 大麦幼穗分化进程与植株外部形态关系密切，1997年对5个大麦品种(品系)、不同播期的幼穗分化与叶龄、叶龄余数和叶枕距的关系进行了初步研究。结果表明，同一品种不同播期幼穗分化各阶段的叶龄基本一致，不同品种同一播期幼穗分化各阶段的叶龄有明显差异，弱春性品种主茎总叶数较多，幼穗分化起步迟，进程慢，春性品种主茎叶数较少，幼穗分化起步早，进程快。应用叶龄、叶龄余数和叶枕距等指标来判断幼穗分化各阶段，对于采取相应的栽培技术措施、促进小穗分化和小花发育都有重要意义。

Studies on Young Panicle Differentiation and Phenotype Diagnoses of Barley

Relationship the between process of young panicle differentiation and phenotype of borley studied in 1997. The results shown that the process of young panicle differentiation and leaf number in different seeding times with same variety are uniform,the process of young panicle differentiation and leaf number in different varieties that seeding at same time are different apparently. Comparing with the spring type varieties, the weak spring type varieties have more stem leaves, the young panicale differentiation starts late and processes slowly. The application of phenotype diagnoses to the process of young panicle differentiation is meaningful on barley cultivation.