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林业科学 ›› 2023, Vol. 59 ›› Issue (2): 75-85.doi: 10.11707/j.1001-7488.LYKX20220042

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黑老虎果实发育及种子油脂积累规律

何铁定1,2,3,4,邵凤侠1,2,3,张赛阳1,2,3,陈娟1,2,3,杨昌宏5,王森1,2,3,*   

  1. 1. 中南林业科技大学“一带一路”热带干旱经济林工程技术研究中心 长沙 410004
    2. 湖南省"一带一路"热带干旱经济林国际联合研究中心 长沙 410004
    3. 国家林业和草原局经济林育种与栽培重点实验室 长沙 410004
    4. 中国林业科学研究院亚热带林业实验中心 分宜 336600
    5. 通道黑老虎中药材专业合作社 怀化 418500
  • 收稿日期:2022-01-25 出版日期:2023-02-25 发布日期:2023-04-27
  • 通讯作者: 王森
  • 基金资助:
    湖南省重点研发计划:中国-巴基斯坦热带干旱经济林种质资源研究与利用(2022WK2021);中南林业科技大学校长特别基金:黑老虎新品种选育研究(2019-1)

Fruit Development and Seed Oil Accumulation of Kadsura coccinea

Tieding He1,2,3,4,Fengxia Shao1,2,3,Saiyang Zhang1,2,3,Juan Chen1,2,3,Changhong Yang5,Sen Wang1,2,3,*   

  1. 1. Engineering Technology Research Center of Tropical Arid Non-Wood Forest for the Belt and Road of Central South University of Forestry and Technology Changsha 410004
    2. International Joint Research Center of Tropical Arid Non-Wood Forest for the Belt and Road of Hunan Province Changsha 410004
    3. Key Laboratory of Non-Wood Forest Breeding and Cultivation of State Forestry and Grassland Administration Changsha 410004
    4. Experimental center of subtropical Forestry, Chinese Academy of Forestry Fenyi 336600
    5. Kadsura coccinea Traditional Chinese Medicine Professional Cooperative Huaihua 418500
  • Received:2022-01-25 Online:2023-02-25 Published:2023-04-27
  • Contact: Sen Wang

摘要:

目的: 研究黑老虎果实发育及种子油脂积累规律,可为其果实发育期的栽培管理和种子油脂的开发利用提供理论基础。方法: 观测黑老虎果实发育的8个不同时期果实和种子表型、横纵径、形状指数;并利用索氏抽提法、激光共聚焦显微镜观察法和气相色谱法,观测种子含油量、油体形状和分布、脂肪酸组分。结果: 黑老虎果实发育期为110天左右,发育期分为青果期(14 ~ 56 DAF)、转色期(56 ~ 84 DAF)、红果期(84 ~ 112 DAF)3个阶段(DAF:花后天数)。果实和种子的横纵径、质量生长曲线均呈单“S”型变化规律,符合Logistic回归模型,决定系数高达0.967 2 ~ 0.998 6。14 ~ 98 DAF为果实生长期,横纵径和质量快速增加,成熟时果实横径为115.99 mm、纵径为105.65 mm、单果质量为526.08 g;14 ~ 84 DAF为种子生长期,成熟时黑老虎种子横径为12.38 mm、纵径为14.26 mm、种子百粒质量为47.85 g。种子油脂积累规律呈“慢—快—慢”变化,青果期积累缓慢、转色期快速积累、红果期积累减缓,油脂积累方程为y = 56.261 2 · (1+ $ {\mathrm{e}}^{6.582\;1-0.102t} $ ) ?1。黑老虎种子油体呈圆球形,随着种子发育逐渐体积变大、数量增多逐渐充满整个细胞。油脂积累过程中共检出16种脂肪酸,以棕榈酸、硬脂酸、油酸、亚油酸和亚麻酸为主,其中亚油酸含量最高。成熟的黑老虎种子含油量高达55.51 g·(100g)?1,不饱和脂肪酸占比77.10%,亚油酸相对含量为66.88%,属于优质的植物油脂。结论: 黑老虎果实发育规律、种子油脂积累规律均符合Logistic回归模型,Logistic方程能反映果实发育和油脂积累情况,对果实生产具有重要的指导意义。黑老虎种子含油量高、油体形状规则、油脂品质好,其作为植物食用油具有巨大的潜力和开发价值。

关键词: 黑老虎, 果实发育, 油脂积累, 油体, 脂肪酸组成

Abstract:

Objective: Research on fruit development and seed oil accumulation of Kadsura coccinea can provide a theoretical basis for the cultivation and management of fruit development and the development and utilization of seed oil. Method: In this study, the phenotype, transverse diameter and shape index of fruits and seeds were observed at 8 different stages of fruit development of K. coccinea. The Soxhlet extraction, laser confocal microscopy and gas chromatography methods were used to observe and determine the oil content, oil body shape and distribution as well as fatty acid composition of the seeds. Result: The fruit development period of K. coccinea was about 110 days, which was able to be divided into three stages: green fruit stage (14?56 DAF, days after flowing), color turning stage (56?84 DAF), and red fruit stage (84?112 DAF). The growth curves of horizontal diameter, vertical diameter and mass of fruits and seeds showed a single "S" shape, which was in line with the Logistic regression model, with the determination coefficient as high as 0.967 2?0.998 6. From 14 to 98 DAF was the fruit growth period, and the horizontal diameter, vertical diameter and mass increased rapidly. At maturity, the horizontal diameter of fruit was 115.99 mm, the vertical diameter of fruit was 105.65 mm, and the mass of single fruit was 526.08 g. From 14 to 84 DAF was the seed growth period. At maturity, the horizontal diameter of seed was 12.38 mm, the vertical diameter of seed was 14.26 mm, and the mass of 100-seed was 47.85 g. The oil accumulation rule of seeds was "slow-fast-slow". The accumulation was slow at green fruit stage, rapid accumulation at color change stage, and slow accumulation at red fruit stage. The oil accumulation equation wasy = 56.261 2 · (1+ $ {\mathrm{e}}^{6.582\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }1-0.102t} $ ) ?1. The seed oil body ofK. coccinea was spherical, and the volume became larger and the number increased, and gradually filled the whole cell with the development of seeds. A total of 16 fatty acids were detected during oil accumulation, mainly palmitic acid, stearic acid, oleic acid, linoleic acid and linolenic acid, with the highest content of linoleic acid. The oil content of mature seeds of K. coccinea was up to 55.51 g·100 g?1, in which unsaturated fatty acids accounted for 77.10%, and the relative content of linoleic acid was 66.88%, belonging to high quality vegetable oils. Conclusion: The patterns of fruit development and seed oil accumulation of K. coccinea conform to the Logistic regression model. The Logistic equation can reflect the situation of fruit development and oil accumulation, which has important guiding significance for fruit production. K. coccinea seed has high oil content, regular oil shape and high oil quality, so that it has great potential and development value as plant edible oil.

Key words: Kadsura coccinea, fruit development, oil accumulation, oil body, fatty acid composition

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