Root Weight, Nonstructural Carbohydrate Content, and Shoot Density of High-density Creeping Bentgrass Cultivars
Root Weight, Nonstructural Carbohydrate Content, and Shoot Density of High-density Creeping Bentgrass Cultivars
复制标题
高密度匍匐翦股颖品种的根重、非结构碳水化合物含量和芽密度
DOI：
10.21273/hortsci.36.2.368
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
M. McBride
中科院分区：
文献类型：
--
作者：
P. M. Sweeney;K. Danneberger;Daijun Wang;M. McBride
在美国，最近发布的用于高尔夫球场推杆果岭的高枝密度匍匐弯草（Agrostis stolonifera L.）品种在温带条件下的性能信息有限。1996年8月，在高含沙量的绿色蔬菜组合上建立了15个品种，比较了它们的季节重和总非结构碳水化合物（TNC）含量。栽培品种的扦插高度保持在3.1 mm。1998年4月、7月和10月分别进行了枝密度统计。从1997年6月到1998年11月，每个月对根的重量和非结构性碳水化合物水平进行评估。对高芽密度品种（‘Penn Al’、‘Penn A2’、‘Penn A4’、‘Penn G1’、‘Penn G2’和‘Penn G6’）和标准品种（‘Penncross’、‘Crenshaw’、‘Southshore’、DF-1’、Procup’、Lopez’、‘SR1020’和‘Providence’）进行品种组对比发现，在三个采样日期中的两个，高芽密度品种平均每dm 2多出342.9和216.1个芽。根干重在不同品种间差异不显著（P≤0.05）。1998年3月至5月间，对高茎密度新品种与标准品种进行了比较，结果表明，高茎密度新品种的根干重高于标准品种。在18个采样日期中，有2个观察到TNC的差异（P≤0.05），但趋势不明显。
Limited information is available on the performance under temperate conditions in the United States of recently released cultivars of creeping bentgrass (Agrostis stolonifera L.) with high shoot density for use on golf course putting greens. Fifteen cultivars were established in Aug. 1996 on a greens mix with high sand content to compare their seasonal weights and total nonstructural carbohydrate (TNC) contents. The cultivars were maintained at 3.1 mm height of cut. Shoot density counts were taken during Apr., July, and Oct. 1998. Root weights and nonstructural carbohydrate levels were assessed monthly from June 1997 through Nov. 1998. A cultivar group contrast between the high shoot density cultivars ('Penn Al', 'Penn A2', 'Penn A4', 'Penn G1', 'Penn G2', and 'Penn G6') and the standard cultivars (Penncross', 'Crenshaw', 'Southshore', DF-1', Procup', Lopez', 'SR1020', and 'Providence') revealed that the former averaged 342.9 and 216.1 more shoots/dm 2 on two of the three sampling dates. Root dry weights did not vary significantly (P ≤0.05) among the cultivars. Performing a contrast between new high shoot density cultivars and standard cultivars revealed greater root dry weight in the former during Mar. and May 1998. Differences (P ≤0.05) in TNC were observed on two of the 18 sampling dates, but no trends were evident.