以结缕草(Z oy sia W illd.)杂交后代为材料,以Z014(马尼拉)、Z129(青岛结缕草)及Z077(“兰引3号”结缕草)为对照,以电解质外渗法和地下茎恢复性生长评价其抗寒性,分析抗寒性、枯萎期及青绿期的回归关系。结果表明:叶片电解质外渗率半...以结缕草(Z oy sia W illd.)杂交后代为材料,以Z014(马尼拉)、Z129(青岛结缕草)及Z077(“兰引3号”结缕草)为对照,以电解质外渗法和地下茎恢复性生长评价其抗寒性,分析抗寒性、枯萎期及青绿期的回归关系。结果表明:叶片电解质外渗率半致死温度(LT50)的变化范围为-5.78^-8.26℃,其中22-2、40-2和40-8的半致死温度均低于对照;叶片半致死温度由低到高,即抗寒性由强到弱依次为22-2>40-2>40-8>Z077>Z129>Z014>40-5>31-3>18-1>18-4>37-1>22-3;地下茎恢复生长试验结果表明,杂交后代在-6℃时全部致死,在-2℃处理后均可以恢复生长,恢复生长的百分率变异较大(14.7%~100%),其中31-3与40-2超过Z014与Z077,22-2超过Z077;供试材料间叶片和地下茎抗寒性的测定结果一致;回归分析结果表明,叶片的半致死温度、青绿期及枯萎期相关不显著。展开更多
Tramp-tolerance characters of C299 of Cynodon dactylon (L.) Pers. and two hybrids ‘Tifdwarf’ and ‘Tifgreen’ of C. dactylon×C. transvaalensis Burtt-Davy were evaluated under the light-tramp, medium-tramp and s...Tramp-tolerance characters of C299 of Cynodon dactylon (L.) Pers. and two hybrids ‘Tifdwarf’ and ‘Tifgreen’ of C. dactylon×C. transvaalensis Burtt-Davy were evaluated under the light-tramp, medium-tramp and serious-tramp with a 75 kg tramper. The results indicated that tramp caused leaf blades of C299 narrower, color lighter and turf quality lower; but the turf height and internode length of C299 with different rolling intensity were not obviously different from that of ‘Tifgreen’. The turf quality of C299 under serious tramp is higher than that of ‘Tifgreen’ and ‘Tifdwarf’. C299 had stronger ability to recover in vertical direction than that of ‘Tifgreen’ and ‘Tifdwarf’ under the tramp. The results show that C299 has the high turf quality and tramp tolerance charater.展开更多
文摘以结缕草(Z oy sia W illd.)杂交后代为材料,以Z014(马尼拉)、Z129(青岛结缕草)及Z077(“兰引3号”结缕草)为对照,以电解质外渗法和地下茎恢复性生长评价其抗寒性,分析抗寒性、枯萎期及青绿期的回归关系。结果表明:叶片电解质外渗率半致死温度(LT50)的变化范围为-5.78^-8.26℃,其中22-2、40-2和40-8的半致死温度均低于对照;叶片半致死温度由低到高,即抗寒性由强到弱依次为22-2>40-2>40-8>Z077>Z129>Z014>40-5>31-3>18-1>18-4>37-1>22-3;地下茎恢复生长试验结果表明,杂交后代在-6℃时全部致死,在-2℃处理后均可以恢复生长,恢复生长的百分率变异较大(14.7%~100%),其中31-3与40-2超过Z014与Z077,22-2超过Z077;供试材料间叶片和地下茎抗寒性的测定结果一致;回归分析结果表明,叶片的半致死温度、青绿期及枯萎期相关不显著。
文摘Tramp-tolerance characters of C299 of Cynodon dactylon (L.) Pers. and two hybrids ‘Tifdwarf’ and ‘Tifgreen’ of C. dactylon×C. transvaalensis Burtt-Davy were evaluated under the light-tramp, medium-tramp and serious-tramp with a 75 kg tramper. The results indicated that tramp caused leaf blades of C299 narrower, color lighter and turf quality lower; but the turf height and internode length of C299 with different rolling intensity were not obviously different from that of ‘Tifgreen’. The turf quality of C299 under serious tramp is higher than that of ‘Tifgreen’ and ‘Tifdwarf’. C299 had stronger ability to recover in vertical direction than that of ‘Tifgreen’ and ‘Tifdwarf’ under the tramp. The results show that C299 has the high turf quality and tramp tolerance charater.
