Bulletin of Botanical Research ›› 2021, Vol. 41 ›› Issue (5): 675-683.doi: 10.7525/j.issn.1673-5102.2021.05.005
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Wen-Ying WANG1, Qiu-Hong WANG1, Ming-Yuan LIU2, Yan SUN1()
Received:
2021-03-20
Online:
2021-09-20
Published:
2021-07-05
Contact:
Yan SUN
E-mail:sy81518@sohu.com
About author:
WANG Wen-Ying(2001—),female,undergraduate,mainly engaged in the study of structural botany.
Supported by:
CLC Number:
Wen-Ying WANG, Qiu-Hong WANG, Ming-Yuan LIU, Yan SUN. Morphology of Organ Development in Early Ontogeny of Gentiana scabra Bunge[J]. Bulletin of Botanical Research, 2021, 41(5): 675-683.
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URL: https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2021.05.005
Fig.1
Embryodevelopment of Gentiana scabraA.Zygote;B.Two-cell proembryo;C.Four-cell proembryo;D.Six-cell proembryo;E.Eight-cell proembryo;F.Club-shaped embryo;G.Globular embryo;H.Heart-shaped embryo;I.Torpedo embryo;ac.Apical cell;bc.Basal cell;ecp.Eight-celled pro-embryo;ow.Ovary wall;em.Embryo;en.Endosperm;fcp.Four-celled pro-embryo;s.Suspensor;scp.Six-celled pro-embryo;z.Zygote;The micropylar end facing down in all pictures
Fig.2
Embryo development and organ differentiation of soaked seeds in G. scabraA.Longitudinal section of seed embryos soaked in water for 2 d,showing the hydrolysis of endosperm cells around the embryo;B.Seed embryos soaked in water for 3 d,longitudinal section,showing cotyledon and hypocotyl development;C.Seed embryos soaked in water for 4 d,longitudinal section,it showed that the organs develop further,and the initial differentiation of the radicle was about to break through the seed coat;D.The embryonic axis elongated to differentiate into the radicle;E-G,I.The longitudinal section of the seed at different stages showed that the root ring and root ring hair appeared,and the radicle root tip had differentiated root cap and meristem;H.Root collet hair and root collet cross section;J.Seedling root end,showing that the root tip was fully differentiated and normal root hair appeared;c.Cotyledon;ch.Collet hairs;h.Hypocotyl;r.Radicle;rc.Root collet;rh.Root hairs
Fig.3
Seed germination process of G. scabra(scanning electron microscope)A.The radicle broke through the seed coat;B.The root ring appeared;C-E.The root ring hair and radicle;F-G.The root ring and the root ring hair were local;H.The radicle further developed and the root hair appears;I.The stoma on the cotyledon had developed;c.Cotyledon;ch.Collet hairs;h.Hypocotyl;r.Radicle;rc.Root collet;rh.Root hairs;rt.Root tip;s.Stoma
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