四川盆地油用牡丹种子品质地区差异及其与生态因子的关系
投稿时间:2021-06-23  修订日期:2021-09-05  点此下载全文
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作者单位邮编
孙志鹏 四川省林业科学研究院 610081
武华卫 四川省林业科学研究院 610081
方颖 四川省林业科学研究院 610081
赖世会 四川省林业科学研究院 610081
罗建勋 四川省林业科学研究院 610081
基金项目:四川省育种攻关项目——突破性林木育种材料和方法创新及新品种选育(2021YFYZ0032)
中文摘要:以四川盆地12个引种地的油用牡丹‘凤丹’种子为研究对象,对其表型性状及营养成分进行测定分析,并结合气象、土壤养分和海拔等生态因子,探讨各性状与生态因子的相关性,揭示影响种子品质的关键生态因子,以期为‘凤丹’科学引种、高效栽培提供理论支撑。结果显示:(1)各采样地‘凤丹’种子表型性状横径、纵径、种形指数以及千粒重均具有极显著差异(P<0.01),其变幅分别为7.98~10.63 mm、7.75~10.86 mm、0.80~1.32以及311.23~393.15 g,且种子纵径和千粒重均以巴中市南江县最大(10.86 mm,393.15 g),横径和种形指数分别以乐山市峨边县、南充市西充县最大(10.63 mm,1.32)。(2)各采样地‘凤丹’种子营养成分中含油率、蛋白质、α-亚麻酸及亚油酸存在极显著差异(P<0.01),它们变化幅度分别为20.5%~26.9%、15.6%~19.6%、42.8~47.1%和15.7~19.6%,且均以巴中市南江县较高(26%、18.3%、47.1%和18.3%)。(3)‘凤丹’种子千粒重与α-亚麻酸、亚油酸含量(r= 0.760**和-0.701**),蛋白质与亚油酸、油酸含量(r= -0.686**和0.665**),α-亚麻酸与亚油酸含量(r= -0.904**),以及棕榈酸与硬脂酸含量(r= -0.792**)均呈极显著相关。(4)立地条件对‘凤丹’种子表型性状和营养成分贡献率大小为速效钾 >有机质 >海拔 >碱解氮 >有效磷>pH,气候条件贡献率大小为全年日照>1月气温>7月气温>年降雨量>年均温,其中海拔对种子表型性状的影响较大,速效钾对种形指数和油酸的影响较大,有机质和碱解氮对蛋白质和含油率的影响较大;海拔、速效钾、有效磷、碱解氮和温度与种子表型性状、含油率、α-亚麻酸、蛋白质和棕榈酸正相关程度大,与硬脂酸和亚油酸呈负相关。研究发现,四川盆地不同区域引种栽培的‘凤丹’种子表型性状及主要营养成分含量具有显著差异,气象、土壤养分和海拔等生态因子对‘凤丹’种子品质具有重要影响,在选择‘凤丹’种植基地时应选择海拔、温度较高,土壤养分(有机质、速效钾、有效磷、碱解氮)充沛的地区。
中文关键词:四川盆地  油用牡丹‘凤丹’  表型性状  营养性状  生态因子
 
Regional Difference of Seed Quality and Its Relationship with Ecological Factors of Oil Peony in Sichuan Basin
Abstract:The phenotypic characteristics and nutritional components of Paeonia suffruticosa Andr ‘fengdan’seeds introduced from 12 introduced areas in Sichuan basin were determined and analyzed, and combined with ecological factors such as meteorology, soil nutrients and altitude, in order to provide theoretical support for scientific introduction and high-efficiency cultivation of ‘Fengdan’, the correlation between characters and ecological factors was studied and key ecological factors affecting seed quality were revealed. The results showed that: (1) The transverse diameter, longitudinal diameter, seed shape index and 1000 grain weight of phenotypic characters of "Fengdan" seeds in each sampling area had extremely significant differences (P < 0.01), and their variation ranges were 7.98 ~ 10.63 mm, 7.75 ~ 10.86 mm, 0.80 ~ 1.32 and 311.23 ~ 393.15 g respectively. The longitudinal diameter and 1000 grain weight of seeds in Nanjiang County, Bazhong City were the largest (10.86 mm, 393.15 g), and the transverse diameter and seed shape index were the largest in Ebian County of Leshan City and Xichong County of Nanchong City (10.63 mm, 1.32). The phenotypic traits of ‘fengdan’ seeds from different sampling sites were significantly different (p < 0.01) ; the variation ranges of seed diameter, longitudinal diameter, seed shape index and 1000-seed mass were 7.98-10.63 mm, 7.75-10.86 mm, 0.80-1.32 and 311.23-393.15 g; respectively, the longitudinal diameter and 1000-grain weight of ‘Fengdan’ seeds from each sampling site were the largest (10.86 mm, 393.15 g) in Nanjiang County, and the transverse diameter and 1000-grain weight were the largest (10.63 mm, 1.32) in Ebian County and Xichong County. (2) There were significant differences in oil content, protein, α-linolenic acid and linoleic acid (P<0.01) in the seeds of ‘Fengdan’ from different sampling sites, and the ranges of their changes were 20.5%~26.9% , 15.6%~19.6% , 42.8%~47.1% and 15.7~19.6% respectively, which were higher in Nanjiang County of Bazhong City (26%, 18.3%, 47.1% and 18.3%)..The contents of oil, protein, α-linolenic acid and linoleic acid were higher in Nanjiang County (26% , 18.3% , 47.1% and 18.3%) , the oil content, protein, α-linolenic acid and linoleic acid content of ‘Fengdan’seeds were 20.5%~26.9% , 15.6% ~19.6% , 42.8~47.1% and 15.7~19.6% , respectively. (3) The 1000-grain weight of ‘Fengdan’seeds was significantly correlated with the contents of α-linolenic acid and linoleic acid (r = 0.760 and-0.701), and the contents of linoleic acid and oleic acid were significantly correlated with the contents of protein (r =-0.686 and 0.665), α-linolenic acid was negatively correlated with linoleic acid (r =-0.904), while palmitic acid was negatively correlated with stearic acid (r =-0.792). (4) TheThe results of redundancy analysis showed that the contribution of site conditions to the phenotypic characters and nutrient components of ‘Fengdan’seeds were as follows: available potassium > organic matter > altitude > available nitrogen > available phosphorus > pH, the contribution rates of climatic conditions are annual sunshine > January temperature > July temperature > annual rainfall > annual average temperature, among which altitude has a greater effect on seed phenotypic characters, and available potassium has a greater effect on seed shape index and oleic acid, the effects of organic matter and alkali-hydrolyzable nitrogen on protein and oil content were significant, and there were positive correlations between altitude, available potassium, available phosphorus, alkali-hydrolyzable nitrogen and temperature with seed phenotypic traits, oil content, α-linolenic acid, protein and palmitic acid, negative correlation with stearic acid and linoleic acid. The study foundThe study showed that there were significant differences in the phenotypic characters and the contents of main nutrient components of ‘fengdan’ seeds introduced from different regions in Sichuan Basin, ecological factors such as weather, soil nutrients and altitude have important effects on seed quality of ‘Fengdan’. When selecting the planting base of ‘Fengdan’, we should choose higher altitude and higher temperature, an area rich in soil nutrients (organic matter, available potassium, available phosphorus, and alkaline-hydrolyzed nitrogen).
keywords:Sichuan basin  Paeonia suffruticosa Andr‘Fengdan’  phenotypic characteristics  nutritional components  ecological factors
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