苦荞种质主要农艺性状的变异及其对单株粒重的贡献研究

对180份苦荞种质资源的8个主要农艺性状进行了评价,并对单株粒重与其他7个农艺性状之间进行了相关性分析和通径分析。结果显示,主要农艺性状的变异系数为8.10%~39.40%;简单相关分析表明,单株粒重与单株粒数、主茎分支数呈极显著正相关;偏相关分析表明,单株粒重与单株粒数、千粒重呈极显著正相关;多元回归和通径分析均表明,单株粒数、千粒重是影响单株粒重的主要因素,其中单株粒数影响最大。系统聚类分析表明,180份苦荞种质资源可划分为5类,其中第Ⅲ类(包括47份供试材料)的综合农艺性状较好,主要表现为主茎分枝能力强、单株粒数多、单株粒重和单株米粒重高,可作为优异基因资源进一步开发利用,也为以增加单株米粒重与出米率为选育目标的苦荞薄壳育种提供依据。     

乌塌菜主要农艺性状的变异、相关性和聚类分析

对63份乌塌菜种质资源的株高、最大展幅、单株叶片数、最大叶片面积、最大叶柄长、最大叶柄宽、单株重、单株叶片重、单株叶柄重、最大叶片长、最大叶片宽等11个主要农艺性状进行了测定、并进行了相关性和聚类分析.结果表明,供试的63份乌塌菜种质资源的11个主要农艺性状具有较丰富的变异潜力,其中单株叶片数、单株叶片重、最大叶片面积、单株叶柄重、最大叶柄长度、单株重、最大叶柄宽度、株高变异较大,最大叶片长、最大叶片宽、最大展幅变异较小.农艺性状间的相关性分析表明,最大叶柄宽度与最大展幅不相关,最大叶柄宽度与最大叶柄长度呈负相关,其余性状间均呈显著或极显著正相关.通过聚类分析,利用类平均法在欧氏距离5.15处,供试材料可分为5个不同的类型,各类型的农艺性状差异明显.     

不同月龄哲罗鲑主要形态性状与体重的关系

为确定影响哲罗鲑(Hucho taimen)体重的主要形态性状,随机选取5个生长阶段共计710尾哲罗鲑为实验对象(3月龄240尾、6月龄180尾、12月龄110尾、18月龄90尾、36月龄90尾),测量其体重(y)、体长(x_1)、体宽(x_2)、体高(x_3)、头长(x_4)、眼径(x_5)、尾鳍长(x_6)、尾鳍高(x_7)、尾柄高(x_8)9个性状。通过相关分析、通径分析和回归分析,计算相关系数、通径系数和决定系数,获得相关回归方程,对不同月龄间的形态性状对体重的影响程度进行了比较分析。结果表明,3月龄、6月龄、18月龄和36月龄个体体长对体重的直接作用较大,12月龄个体则是体宽对体重的影响较大。利用逐步回归分析方法,以体重为依变量(y),形态性状为自变量(x_1~x_8),建立了哲罗鲑不同月龄最优多元线性回归方程分别为:y3=﹣14.911+1.561 x_1+3.448 x_2+5.232 x_3;y6=﹣70.321+5.192 x_1+0.962 x_2+0.473 x_3;y12=﹣217.446+7.129 x_1+23.147 x_2+44.055 x_3;y18=﹣891.041+20.234 x_1+65.786x_2+53.266 x_3;y36=﹣5748.099+88.187 x_1+301.984 x_2+66.702 x_7。该研究结果为哲罗鲑选择育种的具体应用提供了重要参考依据。     

黄瓜自交系选育中产量性状的灰色关联和相关分析

对8个黄瓜自交系产量构成性状的灰色关联和相关分析结果表明,决定黄瓜自交系产量的因素是果长、果肉厚度、果径大小、单株瓜数、单株产量和早期产量.黄瓜自交系选育中应注重综合性状.     

基于水稻产量构成性状间相关性的选种标准数学模型建立

选用54个水稻杂交组合F1代,对穗粒数、有效穗数、千粒重、穗谷重等产量构成性状进行相关、回归分析及其线性方程相交分析,并建立水稻选种入选标准的数学模型.结果表明:穗粒数(X_1)分别与其它三个性状间的相关达极显著水平,这四个性状的复相关系数达到极显著水平,表现为水稻产量构成性状间是互相影响、互为矛盾,构成性状间的矛盾与统一;经标准化的有效穗数(X_2)、千粒重(X_3)和穗谷重(X_4)分别依穗粒数(X_1)回归的线性回归方程分别为,x_2=0.6797-0.5907x_1,x_3=0.7268-0.4917x_1,x_4=0.2466+0.5053x_1.根据这些方程的升降性,分别组成联立方程组,求出这四个数量性状互作的矛盾统一点为:穗粒数136.6粒、有效穗数7.72穗/丛、千粒重23.53g、穗谷重3.09g;这四个性状相互作用、相互协调的优良表现型值落在穗粒数为132.3-177.0粒范围内.以穗粒数、有效穗数、千粒重、穗谷重的线性关系,建立的水稻选种入选标准数学模型具有较好的预见性和实用性.     

大豆种质资源农艺性状和产量的年份间差异及其关系

明确大豆种质资源农艺性状的变化及其与产量的关系对大豆遗传育种具有重要的意义。以249份大豆种质资源为材料,应用多元统计方法分析了大田条件下两年间大豆农艺性状与产量的变化。结果表明,大豆种质资源的农艺性状和产量两年变异系数分别为6.2%~78.0%和6.3%~48.5%,变异较大。生育日数因在黄淮海区域生态类型较接近,变异系数较小;而主茎节数变异系数也较小。株高、有效分枝数、底荚高度、单株荚数、单株粒数、每荚粒数、单株粒重、百粒重、单位面积产量则相对变异较大。品种之间农艺性状和产量差异均显著。不同年份间生态因子（温度、降水量及日照时数）对大豆农艺性状和产量的影响较大,年份间不同指标差异亦显著。分别对两年农艺性状采用主成分分析,简化为4个与产量相关的独立指标,并建立了产量与农艺性状之间的方程Y=17.5-1.76x1+1.32x2+0.30x3+2.50x4和Y=198.8-3.12x1+7.71x2+0.08x3+2.71x4以表达其量化关系;采用聚类分析方法将两年中249份大豆种质资源分别聚为5类,并分析了各类品种的特性,为高产稳产大豆新品种的选育以及高产栽培措施的调控提供理论依据。     

西藏与周边地区芥菜型油菜农艺性状比较研究

运用典范相关分析方法,对西藏及周边地区芥菜型油菜的产量性状、主茎性状、分枝性状、角果性状等4组性状间的典范相关关系进行了比较研究.结果表明:(1)所研究的18个性状中,西藏芥菜型油菜的平均数为周边地区芥菜型油菜的1.88倍,总体变异系数比周边省份芥菜型油菜高10.22％;(2)西藏芥菜型油菜单株产量主要取决于每株角果数和千粒重,而周边省份芥菜型油菜单株产量主要取决于每株有效角果数,中国周边国家芥菜型油菜单株产量主要取决于每株有效角果数和千粒重;(3)影响西藏芥菜型油菜产量性状最重要的因素是角果性状,其次是分枝性状和主茎性状,而影响周边省份和中国周边国家芥菜型油菜产量性状最重要的因素则是主茎性状,其次是分枝性状和角果性状.     

矮生菜豆豆荚产量构成因素的通径分析

以8个矮生菜豆品种为材料,研究了单株豆荚产量与其主要构成因素的关系,结果表明,单株豆荚产量及作为豆荚产量构成因素的主茎高、分枝数、花序数、豆荚数、豆荚长和豆荚重在品种间均存在极显著的差异;但这些产量构成因素与单株豆荚产量之间,无论是表型相关系数还是遗传相关系数或是环境相关系数均未达到显著水平。通径分析结果显示,一个与单株豆荚产量关系密切的性状。其对单株豆荚产量的效应总是由于存在一个或多个负向的间接通径系数而被削弱。从而掩盖了该性状对单株豆荚产量的遗传效应,从表型和遗传通径系数看,对单株产量最为重要的是单株结荚数及单株花序数。单株分枝数、主茎高和豆荚重其次。豆荚长则较为次要。根据通径分析结果,就矮生菜豆丰产性育种中各有关性状的选择进行了讨论。     

3个香榧单株的种实性状变异分析

对浙江宁海3个香榧单株种实种长、种径、种长径比(种形系数)、单种重、鲜出核率、核长、核径、核长径比(核形指数)、单核重9个性状指标进行了测定和统计分析,为香榧优株选育提供理论依据。结果表明:单种重平均值最大的是宁榧1号(9.17 g),单种重极大值出现在宁榧1号(13.6 g);单核重平均值最大的为宁榧1号(2.93 g)。平均鲜出核率最大的是宁榧3号,达到40.86%,鲜出核率极大值出现在宁榧2号(51.06%)。株间种长、种径、种长径比、核长、核长径比、单种重、单核重、鲜出核率指标均存在显著差异,而核径差异性不显著。种实性状变异幅度最大的指标为单核重(变异系数CV为22.68%),单种重(变异系数CV为21.18%)次之,最小的为种长径比(变异系数CV为4.49%)。种长、种径、核长、核径均与单种重和单核重有显著相关性,鲜出核率与种长、种径、单种重、呈极显著负相关,与种长径比呈极显著正相关。     

紫丁香195个实生单株花表型性状变异分析

为了准确掌握紫丁香资源花部性状的变异程度及表型多样性水平,为紫丁香优良品种的选育提供理论依据。本研究以195株紫丁香实生单株为材料,对其5个数量性状和4个质量性状的变异、性状间相关性和聚类关系等进行了分析。结果表明,5个数量性状在群体内表现出极显著差异(P<0.01),且符合正态分布,变异系数为19.72%~30.22%,平均24.97%,其中花序长变异最大;根据ISCC-NBS色彩名称表示法将群体花色划分为白色系、浅粉色系、紫色系、紫红色系、紫粉色系和蓝紫色系等6个色系,其中紫色系(54.35%)和紫红色系(32.31%)所占比例最大;4个质量性状的多样性指数为0.36~1.09,平均0.86,其中花冠裂片(状态)最大,表明群体中质量性状变异类型丰富。相关性分析表明,5个数量性状之间均呈现极显著正相关,其中花序长与花序宽相关系数最大,为0.767。聚类分析表明,195株紫丁香基于欧氏距离可分为3大类,第一类群主要性状表现为花冠筒长;第二类群表现为花序长;第三类群表现为花冠裂片长。参试紫丁香资源花部性状表型变异丰富。     

珍稀植物蒜头果野生植株结实量及果实特征研究

该研究对云南省广南县不同分布点的野生植株大小与结实量,果实、果核性状特征,果皮与果核性状间的关系进行了分析。结果表明:(1)野生成年植株个体间结实量差异大,单株结实量从几十个至几千个,变异系数可达136.38%。结实量与冠幅有正相关关系(R=0.592,P0.01),与胸径和树高无相关关系(P0.05)。(2)扁球型果实平均纵径37.10~40.36 mm,变异系数7.28%~8.65%;平均横径41.15~45.03mm,变异系数6.44%~9.31%;平均果实重量35.77~47.29 g,变异系数18.99%~21.44%。野生蒜头果果实大小差异明显,单个果实重量差别为3.4倍。(3)果核平均纵径27.50~31.69 mm,变异系数7.13%~10.99%;平均横径30.94~34.16 mm,变异系数6.47%~9.41%;平均果核重量14.03~18.77 g,变异系数17.37%~22.68%。单个果核重量差别为3.7倍。(4)平均果皮纵向厚度4.33~4.80 mm,变异系数20.22%~26.91%;平均横向厚度5.10~5.44 mm,变异系数12.92%~20.98%;平均果皮重21.62~28.51 g,变异系数20.01%~24.12%。该研究结果表明野生蒜头果单株结实量、果实和果核大小、果皮厚等表型性状存在广泛的多样性,其资源为人工定向培育和开发利用提供了较为丰富的选择材料。     

Genetic analyses of agronomic and seed quality traits of synthetic oilseedBrassica napus produced from interspecific hybridization ofB. campestris andB. oleracea

The heritability, the number of segregating genes and the type of gene interaction of nine agronomic traits were analysed based on F₂ populations of synthetic oilseedBrassica napus produced from interspecific hybridization ofB. campestris andB. oleracea through ovary culture. The nine traits—plant height, stem width, number of branches, length of main raceme, number of pods per plant, number of seeds per pod, length of pod, seed weight per plant and 1000-seed weight—had heritabilities of 0.927, 0.215, 0.172, 0.381, 0.360, 0.972, 0.952, 0.516 and 0.987 respectively, while the mean numbers of controlling genes for these characters were 7.4, 10.4, 9.9, 12.9, 11.5, 21.7, 20.5, 19.8 and 6.4 respectively. According to estimated coefficients of skewness and kurtosis of the traits tested, no significant gene interaction was found for plant height, stem width, number of branches, length of main raceme, number of seeds per pod and 1000-seed weight. Seed yield per plant is an important target for oilseed production. In partial correlation analysis, number of pods per plant, number of seeds per pod and 1000-seed weight were positively correlated with seed yield per plant. On the other hand, length of pod was negatively correlated (r = -0.69) with seed yield per plant. Other agronomic characters had no significant correlation to seed yield per plant. In this experiment, the linear regressions of seed yield per plant and other agronomic traits were also analysed. The linear regression equation wasy = 0.074x₈ + 1.819x₉ + 6.72x₁₂ -60.78 (R ² = 0.993), wherex ₈, x₉ and x₁₂ represent number of pods per plant, number of seeds per pod and 1000-seed weight respectively. The experiment also showed that erucic acid and oil contents of seeds from F₂ plants were lower than those of their maternal parents. However, glucosinolate content was higher than that of the maternal plants. As for protein content, similar results were found in the F₂ plants and their maternal parents. It was shown that the four quality traits, i.e. erucic acid, glucosinolate, oil content, and protein content, had heritability values of 0.614, 0.405, 0.153 and 0.680 respectively.     

Effects of different nitrogen rich substrates and their combination to the yield performance of oyster mushroom (<Emphasis Type="Italic">Pleurotus ostreatus</Emphasis>)

This study was conducted to assess the effect of nitrogen (N) variations from lignocellulosic substrates of empty fruit bunch (EFB), palm oil frond (POF), palm oil trunks (POT), A.mangium bark (AB) and Cogongrass (IC), and combinations among them using biological supplements (POF and POT) for suitability as a substrate of P. ostreatus. Three different sets of substrates were evaluated in response to different parameters of P. ostreatus including spawn running, primordial initiation, fruit body yield and biological efficiency (BE). The supplementation of POT and POF generally revealed significant differences on the crop performance of P. ostreatus compared to the un-supplemented substrate. POT demonstrated reduced production time, while POF was the best supplement to promote fresh weight and BE. The most rapid spawn running took place within 18.6 ± 0.9 days, while the primordial initiation was observed within 23.2 ± 0.5 days in the combination of IC + POT. The most suitable substrate for higher mushroom weight and BE was IC + POF (19.6 ± 1.3 g; 70.5 ± 5.5%). In addition, the interval between primordial formations was found to be fastest in the un-supplemented EFB and the combination of EFB + POF, which supported a shortened production time. Therefore, IC and EFB appeared to be the better alternative materials for growing P. ostreatus, either with or without any supplementation.     

Variations in photosynthetic rate and associated parameters with age of oil palm leaves under irrigation

Net photosynthetic rate (P _N), transpiration rate (E), and stomatal conductance (g _s) in an adult oil palm (Elaeis guineensis) canopy were highest in the 9^th leaf and progressively declined with leaf age. Larger leaf area (LA) and leaf dry mass (LDM) were recorded in middle leaves. P _N showed a significant positive correlation with g _s and a negative relationship with leaf mass per area (ALM). The oil palm leaf remains photosynthetically active for a longer time in the canopy which contributes significantly to larger dry matter production in general and greater fresh fruit bunch yields in particular.     

饥饿对眼斑双锯鱼(Amphiprion ocellaris)幼鱼形态性状与体质量相关性的影响

本研究运用多变量路径分析技术,分析饥饿7d （饥饿组）和非饥饿状态下（对照组）眼斑双锯鱼（Amphiprion ocellaris）幼鱼的体质量和形态特征之间的相互依赖关系。实验对两种状态下的幼鱼进行体质量（g）和全长（L₁）、体长（L₂）、体高（L₃）、头长（L₄）、头高（L₅）、吻长（L₆）、尾柄长（L₇）、尾柄高（L₈）、背鳍前距（L₉）、胸鳍前距（L₁₀）、腹鳍前距（L₁₁）、臀鳍前距（L₁₂）、眼径（L₁₃）等13个形态性状（mm）的准确测定。采用相关系数、决定系数、通径系数和回归方程等统计方法分析两种状态下眼斑双锯鱼幼鱼的形态性状对体质量的影响。结果显示,两个实验组14个性状间均存在极显著相关关系（P<0.01）;剔除共线性影响后,通径分析筛选出了对照组对体质量影响显著的4个形态性状,直接作用由大到小排序：L₃ > L₂ > L₆ > L₅,间接作用由大到小排序：L₅ > L₆ > L₂ > L₃,单独决定系数由大到小排序：L₃ > L₂ > L₅ > L₆;饥饿组筛选出5个形态性状,直接作用由大到小是L₃ > L₂ > L₁₂ > L₆ > L₇,间接作用由大到小是L₇ > L₁₂ > L₂ > L₆ > L₃,单独决定系数由大到小为L₃ > L₂ > L₁₂ > L₇ > L₆;对照组和饥饿组体质量与形态性状的多元回归方程分别为：W=-0.819+0.106L₃+0.027L₂+0.006L₆-0.050L₅,R²=0.94;W=-0.778+0.078L₃+0.016L₁₂+0.015L₂-0.055L₇+0.018L₆,R²=0.930。结果表明,饥饿影响了形态性状与体质量的相关性,但饥饿和非饥饿状态下体高、体长和吻长都是影响体质量的关键因子,其中体高是最主要的因子,该结果可在眼斑双锯鱼的选育工作中对选育指标的确定提供理论支持。     

苦豆子表型性状多样性分析及综合评价

该研究以自然分布的内蒙、宁夏、甘肃、新疆、陕西等23个不同地理来源(种源)的野生苦豆子种子及其播种于内蒙古鄂托克前旗同质园内的当年生植株为材料,采用方差分析、主成分分析、聚类分析等方法对种子长、宽、千粒重以及植株的叶长、叶宽、叶面积、叶形指数、苗高、地径及生物量等10个表型性状的多样性进行了研究。结果表明:各个表型性状种源间均呈极显著差异,其中种子表型性状的变异系数为5.24%,植株表型性状的变异系数为18.34%,表明种子性状的稳定性高于植株性状。同时,10个性状的表型分化系数均高于70%,说明苦豆子表型多样性主要来源于种源间的表型变异;各种源苦豆子种子性状的表型分化系数均值高达97.55%,且种长、千粒重分别与采集地经度、纬度和海拔等环境因子呈极显著相关性,说明种子表型性状受环境因素的影响较大;相关性分析显示,苦豆子植株性状叶长(LL)、叶面积(LA)分别与种子性状千粒重(TW)、种长(SL)和种宽(SW)有显著相关性,暗示表型性状中的可遗传变异影响;利用主成分和聚类分析对23个种源苦豆子进行综合评价,筛选出生物量较大、苗高较高、千粒重较重、叶面积较大等综合表现较好的6个种源,共分为两类,分别是DK、JY、WY、WH、ETK和YN,这为苦豆子种质资源定向开发以及选育和栽培提供了一定的理论支撑和基础材料。     

Influence of avocado (Persea americana) Cx-cellulase on the structural features of avocado cellulose

Avocado (Persea americana Mill.) fruit produce copious quantities of the enzyme Cx-cellulase (EC 3.2.1.4) during ripening. The possibility that Cx-cellulase is able to disrupt cellulose microfibril oranization was investigated using molecular weight (M_r), x-ray diffraction, and ultrastructural analyses of cell walls from unripe avocado fruit incubated with the purified enzyme. Results indicate that Cx-cellulase causes a downshift in the M_r of unbranched cell-wall polymers in the M_r range of 10⁶–10⁷ Da. There is an increase in the proportion of crystalline cellulose, and cellulose fibrils appear to lose cohesiveness in response to enzyme activity. We propose that Cx-cellulase attacks avocado cellulose at accessible sites in the peripheral and integral noncrystalline regions of the microfibril, resulting in a loss of cohesiveness within the fibril structure and an alteration in the binding of associated cell-wall matrix polysaccharides. The initial loss of avocado mesocarp firmness during fruit ripening may be linked to the onset of Cx-cellulase activity.Abbreviations CMC carboxymethylcellulose - DMAC dimethylacetamide - DS developmental stage - M molecular weight - XG xyloglucan     

Quantification of indole-3-acetic acid from plant associated <Emphasis Type="Italic">Bacillus</Emphasis> spp. and their phytostimulatory effect on <Emphasis Type="Italic">Vigna radiata</Emphasis> (L.)

Sixteen Bacillus strains isolated from rhizosphere, histoplane and phyllosphere of different plant species were identified by 16S rDNA gene sequencing and evaluated for in vitro auxin production as well as growth stimulation of Vigna radiata (L.) Wilczek. Auxin production by Bacillus spp. in L-broth medium supplemented with 1,000 μg ml⁻¹ L-tryptophan ranges from 0.60 to 3.0 μg IAA ml⁻¹ as revealed by gas chromatography and mass spectrometric (GC–MS) analysis. Rhizospheric isolates exhibit relatively more IAA synthesis than histoplane and phyllosphere isolates. Plant microbe interaction experiments conducted under gnotobiotic conditions recorded 55.55, 46.46 and 46.20% increase in shoot length with Bacillus megaterium MiR-4, B. pumilus NpR-1 and B. subtilis TpP-1, respectively, over control. Bacillus inoculations also increased shoot fresh weight with B. megaterium MiR-4 (60.94%) and B. pumilus NpR-1 (37.76%). Highly significant positive correlation between auxin production analyzed by GC–MS and shoot length (r = 0.687**, P = 0.01) and shoot fresh weight (r = 0.703**, P = 0.01) was noted under gnotobiotic conditions. Similarly, significant correlation was also found between auxin production by Bacillus spp. (GC–MS analysis) and different growth parameters such as shoot length (r = 0.495*, P = 0.05), number of pods (r = 0.498*, P = 0.05) and grain weight (r = 0.537*, P = 0.05) at full maturity under natural wire house conditions. Results showed that auxin production potential of plant associated Bacillus spp. can be effectively exploited to enhance the growth and yield of V. radiata.     

Multifaceted potential of bioinoculants on red bell pepper (F1 hybrid,Indam Mamatha) production

The present investigation was undertaken to determine the comparative efficacy of two arbuscular mycorrhizal (AM) fungi (Funneliformis mosseae and Acaulospora laevis) with Trichoderma viride and Pseudomonas fluorescens on growth and yield of red bell pepper. The results indicate that F. mosseae colonized the plant roots better as compared to A. laevis and promoted maximum increment in AM spore number, root colonization, leaf area, acid phosphatase activity, early fruit formation along with maximum increase in fruit nitrogen, and protein content. Whereas F. mosseae+P. fluorescens promoted maximum increase in plant height, shoot weight, mycorrhizal dependency, chlorophyll a, alkaline phosphatase activity, and fruit phosphorus content. Regarding root length, root weight, leaf photosynthesis, chlorophyll b, number of fruits per plant and their fresh weight, it was found best in F. mosseae+A. laevis+P. fluorescens. Therefore, soil inoculation with suitable bioinoculant should be used at nursery stage for better yield.     

樟树长链脂肪酰基CoA合成酶基因9克隆与表达分析

该研究以樟树转录组数据为基础,筛选克隆了拟南芥AtLACS9同源候选基因CcLACS9,二者序列相似性为75%。相关软件预测CcLACS9享有植物LACS亚家族成员3个特征motifs,且N端含有定位质体信手肽。在Δlacs缺陷型酵母互补测试中,以油酸作为唯一外源脂肪酸、转化了CcLACS9的突变型酵母恢复正常生长,证明CcLACS9具有典型的脂肪酰基CoA合成酶的功能。为探究CcLACS9是否参与了樟树籽油生物合成,进一步研究了其组织表达模式和在种子发育过程中其表达量与籽油累积量之间的关系。实时荧光定量PCR分析显示CcLACS9基因在种仁与花中优势表达,种仁中相对表达量是根中的17.74倍。随机测定了30棵成年樟树成熟期种子千粒重、籽油含量和中链脂肪酸比例等指标。根据仁油含量将测试群体划为高、中、低三个不同品级,并在各品级中挑选3棵单株、逐月关联分析其仁油含量与CcLACS9相对表达量。结果表明:在种仁发育前期,仁油含量和CcLACS9表达量都持续上升且二者呈正相关性,8月份为CcLACS9表达量峰值期; 9月下旬后,仁油含量趋向稳定但CcLACS9表达量仍处于较高水平但呈现下降趋势,二者无明显相关性。LACS亚家族在植物进化中较为保守,同源基因在不同植物中具有相同或相似的功能。该研究结果暗示CcLACS9可能拥有AtLACS9相似的生物学功能,即在樟树种仁油酯合成和累积过程中起重要作用。