A New Variety of Scutellaria scordifolia

doi:10.11924/j.issn.1000-6850.casb2021-0435

Abstract

Abstract:

This study is to determine a new variety of Scutellaria scordifolia with white corolla, which is found in Xiaowutai Mountain area of Hebei Province and not recorded before. The new variety can provide a new case for the genetic variation research of plant flower color. Through information inquiry, field visit and laboratory determination, the habitat conditions and distribution of the new variety and the original variant were investigated in Xiaowutai Mountain Nature Reserve of Hebei Province. The flavonoid content and chlorophyll content of the new variety and the original variant were compared and determined in laboratory. By 3 years’ study, we found that there were obvious differences in corolla color between S. scordifolia with white corolla and S. scordifolia distributed nearby, and white corolla could be inherited stably. The leaf color of S. scordifolia with white corolla was slightly lighter, and the chlorophyll content was slightly lower than that of the original variant. The content of flavonoids was about 1.4 times that of the original variant. The S. scordifolia with white corolla had thin and weak lateral branches and more slender lateral roots, significantly different from those of the nearby S. scordifolia, which had fewer and stronger lateral branches and lateral roots. According to information inquiry and field visit, no record on S. scordifolia with white corolla was found. The population distribution characteristics of S. scordifolia with white corolla do not conform to the genetic law of recessive gene expression, and there are no other heterozygotes. S. scordifolia with white corolla is obviously different from S. spectabilis recorded in Flora of Sichuan and four varieties of S. scordifolia reported by Flora of China and Flora of Hebei. Therefore, the S. scordifolia with white corolla is a new variety, and is named S. scordifolia var. white corolla. The new variety is distributed in Donggou at Shanjiankou in Xiaowutai Mountain area.

Key words: Xiaowutai Mountain area, Scutellaria scordifolia, variety, white corolla

CLC Number:

Q949.4

LI Liandi, ZHANG Shuzi, ZHANG Yefei, GUO Jiaojiao, REN Qiwen, BI Jun. A New Variety of Scutellaria scordifolia[J]. Chinese Agricultural Science Bulletin, 2022, 38(13): 71-76.

Figures/Tables 8

References 27

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植物材料	叶绿素(SPAD)	黄酮类物质/(mg/kg)
并头黄芩	39.8±0.5	99.3±0.01
白色花冠并头黄芩	36.9±0.3	137.7±0.01

植物材料	叶绿素(SPAD)	黄酮类物质/(mg/kg)
并头黄芩	39.8±0.5	99.3±0.01
白色花冠并头黄芩	36.9±0.3	137.7±0.01

变种名称	与原变种特征差异
并头黄芩微柔毛变种 S. scordifolia var. puberula	茎沿棱上被有较密的上曲微柔毛;叶上面疏被但在下面除脉外亦被有紧贴微柔毛。产黑龙江、内蒙古、河北及山西;生于山地草坡上或湿草甸上,海拔1400 m以下
并头黄芩雾灵山变种 S. scordifolia var. wulingshanensis	茎上部及叶上面毛被较密,且系具节长伏毛。产河北（兴隆、承德）及山西（霍县）;见于落叶林下,海拔1500~1650 m
并头黄芩喜沙变种 S. scordifolia var. ammophila	茎只在棱上疏被倒向微柔毛;叶披针状线形至线形,长1.4~4 cm,宽2~6 mm,先端极钝,极全缘或具少数远离的小圆齿,上面无毛,下面只在脉上疏被微柔毛,密生凹点。产黑龙江、辽宁、内蒙古、河北北部、陕西;见于海拔1400 m以下的砂地上
并头黄芩多毛变种 S. scordifolia var. villosissima	茎密被上曲的短柔毛,尤其在棱及茎上部为甚;叶两面密被紧贴的短柔毛;花萼及花冠的毛被密集,密被短柔毛,有时混生腺毛。产青海东部、甘肃、陕西、山西西部以及河南西部;生于山地草坡或松林下,海拔1475~1900 m
白花并头黄芩变种 S. scordifolia var. white corolla	花冠白色,叶片颜色呈浅绿色与原种深绿色有差异,分枝多、细弱,侧根多、细长。生于林缘草地,海拔1400~1500 m

变种名称	与原变种特征差异
并头黄芩微柔毛变种 S. scordifolia var. puberula	茎沿棱上被有较密的上曲微柔毛;叶上面疏被但在下面除脉外亦被有紧贴微柔毛。产黑龙江、内蒙古、河北及山西;生于山地草坡上或湿草甸上,海拔1400 m以下
并头黄芩雾灵山变种 S. scordifolia var. wulingshanensis	茎上部及叶上面毛被较密,且系具节长伏毛。产河北（兴隆、承德）及山西（霍县）;见于落叶林下,海拔1500~1650 m
并头黄芩喜沙变种 S. scordifolia var. ammophila	茎只在棱上疏被倒向微柔毛;叶披针状线形至线形,长1.4~4 cm,宽2~6 mm,先端极钝,极全缘或具少数远离的小圆齿,上面无毛,下面只在脉上疏被微柔毛,密生凹点。产黑龙江、辽宁、内蒙古、河北北部、陕西;见于海拔1400 m以下的砂地上
并头黄芩多毛变种 S. scordifolia var. villosissima	茎密被上曲的短柔毛,尤其在棱及茎上部为甚;叶两面密被紧贴的短柔毛;花萼及花冠的毛被密集,密被短柔毛,有时混生腺毛。产青海东部、甘肃、陕西、山西西部以及河南西部;生于山地草坡或松林下,海拔1475~1900 m
白花并头黄芩变种 S. scordifolia var. white corolla	花冠白色,叶片颜色呈浅绿色与原种深绿色有差异,分枝多、细弱,侧根多、细长。生于林缘草地,海拔1400~1500 m