应用解剖镜和扫描电镜对中国产蓼属春蓼组(Polygonumsect.Persicaria)19种3变种植物的果实形态和果皮微形态特征进行了观察和研究。结果表明,蓼属春蓼组植物的果实形态为卵形或椭圆状卵形,具三棱、双凹或双凸,顶端渐狭,有喙或无喙;果皮...应用解剖镜和扫描电镜对中国产蓼属春蓼组(Polygonumsect.Persicaria)19种3变种植物的果实形态和果皮微形态特征进行了观察和研究。结果表明,蓼属春蓼组植物的果实形态为卵形或椭圆状卵形,具三棱、双凹或双凸,顶端渐狭,有喙或无喙;果皮微形态可分为7种类型:洼点、浅洼点,脑纹状纹饰,拟脑纹状纹饰,网状纹饰,不规则褶皱,不规则小疣状颗粒以及密浅网状纹饰。观察结果支持将绵毛酸模叶蓼(P.lapathifoliumL.var.salicifoliumSibth.)合并到酸模叶蓼(P.lapathifoliumL.),做为酸模叶蓼的异名处理;支持将长鬃蓼(P.longisetumDe Br.)作为丛枝蓼(P.posumbuBuch.-Ham.ex D.Don)的变种处理的意见;认为密毛酸模叶蓼(P.lapathifoliumL.var.lanatum(Roxb.)Stew.)应恢复种级,圆基长鬃蓼(P.longisetumDe Br.var.rotunatumA.J.Li)应升为种级;支持平武蓼(Polygonum pingwuenseF.Z.Li et Y.T.Hou et S.J.Fan,sp.nov.)新种的成立。展开更多
Winter chill is essential for the growth and development of deciduous species. To understand the relationship between accumulated chilling hours during endodormancy and blooming and fruit shape development, we control...Winter chill is essential for the growth and development of deciduous species. To understand the relationship between accumulated chilling hours during endodormancy and blooming and fruit shape development, we controlled chilling hours and investigated their effects on blooming date and fruit shape of peaches. The results showed that the number of days to full bloom date and the heat requirement for blooming were negatively correlated with accumulated chilling hours. Accumulated chilling hours were significantly negatively correlated with fruit shape index and fruit tip lengths, suggesting that the number of chilling hours affect the fruit shape development. Fewer accumulated chilling hours may be the major reason for longer fruit shape and protruding fruit tips. In conclusion, our results indicate specifically that decreased winter chilling hours can delay the bloom date and may lead to aberrant fruit shape development in peaches. Our study provides preliminary insights into the response of temperate fruit species to global climate change.展开更多
文摘应用解剖镜和扫描电镜对中国产蓼属春蓼组(Polygonumsect.Persicaria)19种3变种植物的果实形态和果皮微形态特征进行了观察和研究。结果表明,蓼属春蓼组植物的果实形态为卵形或椭圆状卵形,具三棱、双凹或双凸,顶端渐狭,有喙或无喙;果皮微形态可分为7种类型:洼点、浅洼点,脑纹状纹饰,拟脑纹状纹饰,网状纹饰,不规则褶皱,不规则小疣状颗粒以及密浅网状纹饰。观察结果支持将绵毛酸模叶蓼(P.lapathifoliumL.var.salicifoliumSibth.)合并到酸模叶蓼(P.lapathifoliumL.),做为酸模叶蓼的异名处理;支持将长鬃蓼(P.longisetumDe Br.)作为丛枝蓼(P.posumbuBuch.-Ham.ex D.Don)的变种处理的意见;认为密毛酸模叶蓼(P.lapathifoliumL.var.lanatum(Roxb.)Stew.)应恢复种级,圆基长鬃蓼(P.longisetumDe Br.var.rotunatumA.J.Li)应升为种级;支持平武蓼(Polygonum pingwuenseF.Z.Li et Y.T.Hou et S.J.Fan,sp.nov.)新种的成立。
基金supported by the grants from the Agricultural Science and Technology Innovation Program, China (CAAS-ASTIP-2015-ZFRI)the Comprehensive Experimental Station of Zhengzhou of China Agriculture Research System (CARS-31-Z-10)
文摘Winter chill is essential for the growth and development of deciduous species. To understand the relationship between accumulated chilling hours during endodormancy and blooming and fruit shape development, we controlled chilling hours and investigated their effects on blooming date and fruit shape of peaches. The results showed that the number of days to full bloom date and the heat requirement for blooming were negatively correlated with accumulated chilling hours. Accumulated chilling hours were significantly negatively correlated with fruit shape index and fruit tip lengths, suggesting that the number of chilling hours affect the fruit shape development. Fewer accumulated chilling hours may be the major reason for longer fruit shape and protruding fruit tips. In conclusion, our results indicate specifically that decreased winter chilling hours can delay the bloom date and may lead to aberrant fruit shape development in peaches. Our study provides preliminary insights into the response of temperate fruit species to global climate change.
