【摘要】 目的 选育出高产、蛋白质和脂肪含量高的谷子新品（ 系） 种。方法 利用高空气球搭载谷子的干种子，在高空飘游８ ｈ 后回收种植，对其植物学特性及品质进行分析研究。结果 种子发芽率比对照低５ ．２ ％ ，发芽势比对照高２１ ．１ ％ 。 Ｓ Ｐ１ 代植株高度比对照低６ ．８ ｃｍ ，旗叶面积比对照高２５ ％ ，穗重比对照高１５ ．９ ％ ； Ｓ Ｐ３ 代大穗型株系性状相对稳定，其中 Ｓ Ｐ３ － ２ 的种子蛋白质和脂肪含量均高于对照， Ｓ Ｐ３ － ５ 的平均穗长比对照长５ ．８ ｃｍ ，种子铁元素含量比对照高６１ ．５ ｍｇ／ｋｇ 。 Ｓ Ｐ４ 代大穗株系在穗部性状、叶绿素含量和光合速率上表现出显著的差异，４ 个大穗株系在生长前期和后期的叶绿素含量、光合速率显著高于对照，特别是旗叶的光合速率，比对照高２７ ．９ ％ 。结论 经高空气球搭载可选育出高产、蛋白质和脂肪含量高新品（ 系） 种，这些新品种的性状变异在后代中能够表达，可以遗传。更多还原

【Abstract】 Objective To select high yield,high protein and fatty acid millet. Method Air dried seeds of millet were carried by high altitude balloon (HAB) for 8 h.Botany characteristics of these seeds were analyzed and studied after recovery. Result Germinating potential rose 21.1%, germinating percentage reduced 5.2% as compared with the control;plant height was 6.8 cm lower than that of the control in SP1;while flag leaf area and spike weight were 25% and 15.9% higher than those of the control respectively.Large spike strains were stable in SP3 pregeny.In SP3 -2 ,the contents of seed protein and fatty acid were more than those of control;in SP3 -5 ,the average spike length was 5.8 cm,and the content of Fe element in seed was 61.5 mg/kg more than these of control;in SP4 superspike strains,spike character, chloropyll content and photosynthetic rate were significantly higher than the control during growing phase and growing anaphase, photosynthetic rate in flag leaf was over 27.9% higher than those in the control. Conclusion New strains with high protein and fatty acid and high yield could be selected by HAB.The characteristics of these variations in the new strain is hereditable.更多还原