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愈伤组织是多起源的，但主要源于形成层。In addtion, there was callus from xylem.

蕨类植物的木质部只含有管胞。The xylem of ferns only contains tracheids.

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构成年轮的组织被称为木质部。Tree rings are made of tissue called xylem.

裸子植物次生木质部的进化趋势。Evolutionary trends in secondary xylem of gymnosperms.

的木质部仅含有管胞。The xylem of ferns and conifers contains only tracheids.

边材含有木质导管，但不如中心木质那样坚硬。Sapwood contains xylem vessels, but not as strong as heartwood.

致萎毒素可引起棉苗维管束系统堵塞。Wilting toxins can induce to block the xylem of cotton seedling.

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茎由皮层。木质部和海绵状的髓组成。The bine is comprised by cerebral cortex, xylem and fungous marrow.

次生木质部由孔纹导管、薄壁组织及射线所组成。Secondary xylem consists of pitted vessels, parenchyma fibers and rays.

桂枝皮部中桂皮醛的含量较高，木质部中肉桂酸的含量较高。The bark contains more cinnamaldehyde and less cinnamic acid than xylem.

根皮中补骨脂素的含量高于木质部。The content of psoralen in the cortex was higher than that in the xylem.

专门用来运输矿物元素的系统称为木质部。A system confined to the transport of mineral elements is known as the xylem.

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维管植物的木质部和韧皮部主要进行对这类物质进行运输。In vascular plants, the xylem and phloem serve to translocate such substances.

本文对槲寄生的次生木质部——木材进行了解剖学研究。The secondary xylem of viscum coloratum, namely, the wood, is reported in the paper.

对杂交枸树木质部进行了硫酸盐法和APMP制浆性能的试验。Kraft pulping and APMP pulping of the xylem of hybridized citron tree were investigated.

在横切面上，次生韧皮部的面积比次生木质部大得多。In the transection section, the area of secondary phloem is much larger than secondary xylem.

在领春木次生木质部中也观察到了端壁多穿孔板及侧壁穿孔板。Multiple end wall and lateral-wall perforation plates were also observed in the secondary xylem.

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毛细现象是水份沿木质部和土壤空隙运输的重要特征…It is a key feature in the movement of water through the xylem and through the finer pores of the soil.

成熟木质部细胞的出现比成熟的韧皮部细胞要晚约一个月。Meanwhile, the appearance of mature xylem cells was about a month later than that of mature phloem cells.

研究紫枝忍冬茎次生木质部结构，其为环孔材。The study on the stem secondary xylem of Lonicera maximowiczii, reveals the wood belongs to ring porous wood.