摘要：
In order to promote the preservation and breed improvement of radish germplasm resources, nine varieties of radish were used as the experimental materials, which tried to study on genetic diversity the local and conventional radish varieties mentioned above using SSR. Firstly, field characters (leaf shape and skin color) of the above radish materials were observed, then, 9 pairs of SSR primers were screened to detect the above radish samples. The genetic diversity of nine radish species was analyzed by electrophoretic banding and NTSYS software. The results showed that the nine varieties of radish were divided into two groups, group 1 includes 8 varieties except Qiyehong radish, and each variety showed diversity among different similarity coefficients, group 2 includes only Qiyehong radish. There were two distinct branches in the first group, one branch includes four radishes, Lixiangdagen radish, 734 radish, General radish, and Huangzhou radish, whose skin color is white; another branch includes four radishes, the Yichihong radish, Hongbao radish, 262 radish, and Red garden radish, whose skin color is red, which was consistent with field observations.%为筛选出适合齐齐哈尔地区的高淀粉玉米品种最佳的栽培方案,选用高淀粉玉米品种齐市一号、绿单一号和齐齐哈尔主栽高淀粉玉米品种鑫鑫一号为试验材料,通过调节种植密度,探讨不同种植密度对高淀粉玉米产量、粗淀粉含量、ADPG焦磷酸化酶和UDPG焦磷酸化酶活性的影响.结果表明:不同种植密度对高淀粉玉米产量影响显著,不同密度条件下,齐市一号产量均高于绿单一号和鑫鑫一号,齐市一号在70 000株·hm-2时产量最高,与70 000株·hm-2差异不显著,但二者均显著高于其他密度处理.而籽粒中淀粉合成酶ADPG焦磷酸化酶和UDPG焦磷酸化酶活性齐市一号显著高于其他品种,分别在70 000和90 000株·hm-2时达到最大值.籽粒中粗淀粉含量齐市一号显著高于其他品种,在60 000株·hm-2时达到最大值.综上所述,齐齐哈尔地区选择种植高淀粉玉米品种齐市一号,最适宜种植密度为70 000株·hm-2.
