NDLI: Haploid formation in maize, barley, flax, and potato

Content Provider	Springer Nature Link
Author	Pret’ová, A. Obert, B. Bartošová, Z.
Copyright Year	2006
Abstract	The article is reviewing some significant features and issues in the process of haploid formation in two important monocotyledonous crop plants – maize and barley – and in two dicotyledonous plants – flax and potato. Exotic maize lines with higher androgenic response turned up as a good source for this heritable trait and this valuable trait can be incorporated into elite maize lines via crossing. Lots of attempts were devoted to identifying some cytological and/or morphological markers for androgenic response in maize microspore cultures. The “starlike” organization of the cytoplasm inside the induced maize microspores together with the enlarged size of induced microspores can be considered as morphological markers for androgenic response. In barley, microspores with rich cytoplasm that was of granular appearance with the nucleus located near the cell wall and with no visible vacuole had the largest survival rate and many of these cells continued in development and produced embryos. In flax, a dramatic increase of induction rate in anther cultures (up to 25%) was achieved when flax anthers were pretreated for 3 days at 4 °C and afterwards kept for 1 day at 35 °C. Also gynogenesis in flax has been reported already and complete plants were obtained. In potato microspore cultures, formation of two dissimilar cells indicated a strong polarization in the system and as a result of this polarization a prominent suspensor developed that persisted until the torpedo stage of the androgenic embryo. This was the first time the formation of a well developed suspensor was described in connection with androgenesis.
Starting Page	107
Ending Page	114
Page Count	8
File Format	PDF
ISSN	0033183X
Journal	Protoplasma
Volume Number	228
Issue Number	1-3
e-ISSN	16156102
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-08-31
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cell Biology Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science Medicine

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