Genetic gains in grain yield of a maize population improved through marker assisted recurrent selection under stress and non-stress conditions in West Africa (Record no. 59172)

000 -LEADER
fixed length control field nab a22 7a 4500
001 - CONTROL NUMBER
control field 59172
003 - CONTROL NUMBER IDENTIFIER
control field MX-TxCIM
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20190809173143.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 180206s2017 sz |||p| p||| 00| 0 eng d
024 8# - OTHER STANDARD IDENTIFIER
Standard number or code https://doi.org/10.3389/fpls.2017.00841
040 ## - CATALOGING SOURCE
Original cataloging agency MX-TxCIM
041 ## - LANGUAGE CODE
Language code of text/sound track or separate title eng
100 1# - MAIN ENTRY--PERSONAL NAME
9 (RLIN) 4748
Personal name Abdulmalik, R.O.
245 10 - TITLE STATEMENT
Title Genetic gains in grain yield of a maize population improved through marker assisted recurrent selection under stress and non-stress conditions in West Africa
Medium [Electronic Resource]
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc. Switzerland :
Name of publisher, distributor, etc. Frontiers,
Date of publication, distribution, etc. 2017.
500 ## - GENERAL NOTE
General note Peer review
500 ## - GENERAL NOTE
General note Open Access
520 ## - SUMMARY, ETC.
Summary, etc. Marker-assisted recurrent selection (MARS) is a breeding method used to accumulate favorable alleles that for example confer tolerance to drought in inbred lines from several genomic regions within a single population. A bi-parental cross formed from two parents that combine resistance to Striga hermonthica with drought tolerance, which was improved through MARS, was used to assess changes in the frequency of favorable alleles and its impact on inbred line improvement. A total of 200 testcrosses of randomly selected S1 lines derived from the original (C0) and advanced selection cycles of this bi-parental population, were evaluated under drought stress (DS) and well-watered (WW) conditions at Ikenne and under artificial Striga infestation at Abuja and Mokwa in Nigeria in 2014 and 2015. Also, 60 randomly selected S1 lines each derived from the four cycles (C0, C1, C2, C3) were genotyped with 233 SNP markers using KASP assay. The results showed that the frequency of favorable alleles increased with MARS in the bi-parental population with none of the markers showing fixation. The gain in grain yield was not significant under DS condition due to the combined effect of DS and armyworm infestation in 2015. Because the parents used for developing the bi-parental cross combined tolerance to drought with resistance to Striga, improvement in grain yield under DS did not result in undesirable changes in resistance to the parasite in the bi-parental maize population improved through MARS. MARS increased the mean number of combinations of favorable alleles in S1 lines from 114 in C0 to 124 in C3. The level of heterozygosity decreased by 15%, while homozygosity increased by 13% due to the loss of some genotypes in the population. This study demonstrated the effectiveness of MARS in increasing the frequency of favorable alleles for tolerance to drought without disrupting the level of resistance to Striga in a bi-parental population targeted as a source of improved maize inbred lines.
546 ## - LANGUAGE NOTE
Language note Text in English
650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1173
Topical term or geographic name as entry element Maize
Source of heading or term AGROVOC
650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 6302
Topical term or geographic name as entry element Crossbreeding
Source of heading or term AGROVOC
650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 2091
Topical term or geographic name as entry element Genetic gain
Source of heading or term AGROVOC
651 #7 - SUBJECT ADDED ENTRY--GEOGRAPHIC NAME
9 (RLIN) 4388
Geographic name West Africa
Source of heading or term AGROVOC
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 1818
Personal name Menkir, A.
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 4009
Personal name Meseka, S.
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 4847
Personal name Unachukwu, N.
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 2298
Personal name Ado, S.
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 4751
Personal name Olarewaju, J.D.
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 4752
Personal name Aba, D.A.
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 912
Personal name Hearne, S.
Miscellaneous information Genetic Resources Program
Field link and sequence number INT3287
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 59
Personal name Crossa, J.
Field link and sequence number CCJL01
Miscellaneous information Genetic Resources Program
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 4750
Personal name Gedil, M.
773 0# - HOST ITEM ENTRY
Related parts no. 8:841
Title Frontiers in Plant Science
Record control number u56875
856 4# - ELECTRONIC LOCATION AND ACCESS
Link text Open Access through Dspace
Uniform Resource Identifier https://hdl.handle.net/10883/19240
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme
Koha item type Article
Suppress in OPAC 0
Holdings
Withdrawn status Lost status Source of classification or shelving scheme Damaged status Not for loan Collection code Permanent Location Current Location Date acquired Date last seen Price effective from Koha item type
  Not Lost       CIMMYT Staff Publications Collection CIMMYT Knowledge Center: John Woolston Library CIMMYT Knowledge Center: John Woolston Library 2018-02-06 2018-02-06 2018-02-06 Article
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