AMERICAN LANGUAGE HUB_Level2_Student'sBook_Answerkey.pdf
Barnase barstar system
1.
2. SUBMITTED BY
VIKAS KUMAR SINGH
M. SC. (AG), III rd SEM
DEPARTMENT OF GENETICS & PLANT
BREEDING,
CHAUDHARY CHARAN SINGH
UNIVERSITY, MEERUT
SUBMITTED TO
DR. S. S. GAURAV
ASSO. PROFESSOR,
DEPARTMENT OF GENETICS&
PLANT BREEDING,
CHAUDHARY CHARAN SINGH
UNIVERSITY, MEERUT
Heterosis and Its Exploitation
3. Contents Introduction
Features Of Markers
General Steps in MAS
MAS Breeding Scheme
Current status of molecular breeding
Classification of Marker
Achievements
20. P1 x F1
P1 x P2
BC1
VISUAL SELECTION OF BC1
PLANTS THAT MOST CLOSELY
RESEMBLE RECURRENT PARENT
BC2
P1 x F1
P1 x P2
BC1
USE ‘BACKGROUND’ MARKERS TO SELECT
PLANTS THAT HAVE MOST RP MARKERS AND
SMALLEST % OF DONOR GENOME
BC2
39. For producing Dominant GMS.
Need of effective fertility restoration systems.
An effective restoration system is available in at least one
case, Barnase/Barstar system
Recombinant DNA techniques have made it possible to engineer new
systems of male sterility by disturbing any or number of developmental
steps specifically required for the production of functional pollen within
the microspore or for the development of any somatic tissues supporting
the microspores.
51. Selected transgenes used for production of male sterility
TRANSGENE SOURCE TRANSGENIC PLANT
barnase Bacillus amyloliquefaciens Tobacco, B.napus
Rnase T1 Aspergillus oryzae Tobacco, oilseed,rape
Bcp1 Brassica campestris B.oleracea
rolC A.rhizogenes Tobacco,potato,
52. The transgenic hybrid rapeseed-mustard was developed by
multinational Proagro Seed Company Ltd. located at Gurgaon
(now a part of Belgium based Aventis crop science) large scale
field trials in year 2001-2002,this hybrid mustard gave 25% yield
advantage, but could not be cleared by GEAC for commercial
sowing at the farmer fields in October 2002.
Another effort by Delhi University South Campus.
53. Efficient fertility restorer system
Easy maintenance of male sterile lines
Easy elimination of a male fertile plants from male sterile lines
Lack of adverse affects on other traits
Stable male sterile phenotype over different environments
54.
55.
56. They illustrated several approaches for inducing
male sterility. like-
60. 1. Gupta P.K., Langridge P, Mir R.R.(2010)Marker assisted wheat
Breeding:present status and future possibilities,
2. Article shared by Sudhadip Mondal MAS meaning application
step achievements,
3. Journal of Drug Metabolism&Toxicology(review),
4. Singh,B.D. Plant Breeding Principles and Methods,
5. Marker-assisted selection:an approach for precision plant
breeding in the twenty-first century-Bertrand C.Y Collard and
David J Mackill,
6. Singhal.N.C,Hybrid Seed Production,
7. Internet&SlideShare etc
References:-