Effect of S3 recurrent selection in four tropical maize populations on their selfed and randomly mated generations (Record no. 16814)

000 -LEADER
fixed length control field 03822nab a22004937a 4500
001 - CONTROL NUMBER
control field a56667
003 - CONTROL NUMBER IDENTIFIER
control field MX-TxCIM
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20170719155116.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 121211b |||p||p||||||| |z||| |
022 ## - INTERNATIONAL STANDARD SERIAL NUMBER
International Standard Serial Number 1435-0653 (Revista en electrónico)
040 ## - CATALOGING SOURCE
Original cataloging agency MX-TxCIM
041 0# - LANGUAGE CODE
Language code of text/sound track or separate title En
043 ## - GEOGRAPHIC AREA CODE
Geographic area code US
072 #0 - SUBJECT CATEGORY CODE
Subject category code F30
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) CIS-2807
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name Vasal, S.K.
245 00 - TITLE STATEMENT
Title Effect of S3 recurrent selection in four tropical maize populations on their selfed and randomly mated generations
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Date of publication, distribution, etc. 1995
340 ## - PHYSICAL MEDIUM
Material base and configuration Printed
500 ## - GENERAL NOTE
General note Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0011-183X
520 ## - SUMMARY, ETC.
Summary, etc. Maize (Zea mays) breeders working with lowland tropical germplasm have experienced difficulties in developing good inbred lines. One limitation is moderate to drastic inbreeding depression (ID) in these germplasms. In the present study, 2 cycles of S3 recurrent selection were conducted in 4 white maize populations (Tuxpeno-1 (Pop. 21), Blanco Cristaino-3 (Pop. 25), Tuxpeno Caribe (Pop. 29) and Eto Blanco (Pop. 32)) with tropical adaptation with a view to improving them as hybrid-oriented source germplasm. The effect of selection was examined in the selfed (S1) and randomly mated (Syn2) generations. In each population, 200 to 250 S3 progenies were evaluated and 15 to 20 were selected and intermated to form improved versions after cycle 1 (C1) and cycle 2 (C2). Selection was practiced for high grain yield, vigour, and other agronomic traits during inbreeding generations and in the S3-progeny tests. The S1 and Syn2 generations of the C0, C1, and C2 of the 4 populations were evaluated in 3 environments in Mexico, using split-split plot design with populations in main plots, generations in subplots and cycles in sub-subplots. Selection improved the grain yield of the S1 generation, and the linear grain per cycle (Gc) was 12, 9, 4 and 4% in Pop. 21, Pop. 29, Pop. 32 and Pop. 25, respectively, being significant in Pop. 21 and Pop. 29. The C2 of Pop. 21 had the highest grain yield in both Syn2 and S1 generations. Generally, selection did not significantly affect grain moisture, days to silking, and anthesis-silking interval, but it increased plant height in different populations. Combined over populations, however, grain moisture was significantly increased in addition to grain yield and plant height in both S1 and Syn2 generations. The linear Gc for grain yield across populations was 7.41 and 3.20% in the S1 and Syn2 generations, respectively. The effect of selection on grain yield and plant height was generally lower in the Syn2 than the S1 generation of Pop. 25, Pop. 29 and Pop. 32, but was comparable in 2 generations of Pop. 21. The ID for grain yield across populations decreased from 39% in C0 to 35% in C2. The selection was effective in improving grain yield and reducing ID, and the improved populations would serve as better germplasm sources for the extraction of vigorous inbred lines
536 ## - FUNDING INFORMATION NOTE
Text of note Genetic Resources Program
546 ## - LANGUAGE NOTE
Language note English
591 ## - CATALOGING NOTES
Affiliation MP|Crop Science Society of America (CSSA)|R95ANALY|3
594 ## - STAFFID
StaffID CCJL01
595 ## - COLLECTION
Collection CIMMYT Staff Publications Collection
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Inbred lines
9 (RLIN) 1155
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Lowland
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Random mating
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Research projects
9 (RLIN) 1237
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Selection
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Selfing
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Tropical zones
653 0# - INDEX TERM--UNCONTROLLED
Uncontrolled term CIMMYT
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1314
Topical term or geographic name as entry element Zea mays
Miscellaneous information AGROVOC
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1151
Topical term or geographic name as entry element Hybrids
Miscellaneous information AGROVOC
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Dhillon, B.S.,
Relator term coaut.
9 (RLIN) 2240
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name McLean, S.D.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Srinivasan, G.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Zhang, S.H.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 59
Personal name Crossa, J.
Miscellaneous information Genetic Resources Program
Field link and sequence number CCJL01
Relator term coaut.
773 0# - HOST ITEM ENTRY
Title Crop Science
Note 649385
Related parts v. 35, no. 3, p. 697-702
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Article
Holdings
Withdrawn status Lost status Damaged status Not for loan Collection code Permanent Location Current Location Date acquired Full call number Barcode Date last seen Copy number Price effective from Koha item type
  Not Lost     CIMMYT Staff Publications Collection CIMMYT Knowledge Center: John Woolston Library CIMMYT Knowledge Center: John Woolston Library 2015-02-10 CIS-2807 649385 2015-02-10 1 2015-02-10 Article
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