PMID- 34510553
OWN - NLM
STAT- MEDLINE
DCOM- 20220204
LR  - 20220731
IS  - 1439-0388 (Electronic)
IS  - 0931-2668 (Print)
IS  - 0931-2668 (Linking)
VI  - 139
IP  - 2
DP  - 2022 Mar
TI  - Genetic parameters in traits of productive importance in lines of Bombyx mori L.
PG  - 136-144
LID - 10.1111/jbg.12647 [doi]
AB  - In the textile industry, complex cocoon traits are closely related to silk 
      production. The aim of the present study was to estimate genetic parameters of 
      economic importance traits-cocoon length (CL), cocoon weight (CW) and shell 
      weight (SW)-in three B. mori lines-Chinese (C6), Japanese (J7) and Indian (C. 
      Nichi)-reared under different temperature and photoperiod conditions. For each of 
      these lines, data were collected from several generations with a full-sibling 
      family structure and variance-covariance component were obtained via restricted 
      maximum likelihood (REML) estimates based on a bi-trait animal model analysed 
      through the multiple-trait derivative-free restricted maximum likelihood 
      (MTDFREML) software. Genetic parameters of the traits varied between the silkworm 
      lines were evaluated. Heritabilities were highest in J7 line (0.71, 0.89 and 0.93 
      for CL, CW and SW, respectively) followed by C6 (0.48, 0.54 and 0.50 for CL, CW 
      and SW, respectively) and C. Nichi (0.36, 0.43 and 0.40 for CL, CW and SW, 
      respectively). Phenotypic correlations among these lines were positive, with 
      values ranging between 0.36 and 0.767. Similarly, genetic correlations between 
      the analysed silkworm lines were observed to be positive, with high values 
      ranging from 0.86 to 0.94. The evidence for environmental correlation in these 
      lines was found only between CW-SW traits with moderate to high values ranging 
      from 0.600 to 0.940. The magnitude of heritability and genetic correlations 
      implies that phenotypic variations of the CL, CW and SW traits depend mainly on 
      genotypic variation within the J7, C6 and C. Nichi lines, and that simultaneous 
      genetic gains are possible by implementing selection processes for any of the 
      evaluated traits.
CI  - (c) 2021 The Authors. Journal of Animal Breeding and Genetics published by John 
      Wiley & Sons Ltd.
FAU - Zambrano-Gonzalez, Giselle
AU  - Zambrano-Gonzalez G
AUID- ORCID: 0000-0002-6803-8721
AD  - Department of Biology, Faculty of Natural, Exact and Education Sciences, Group of 
      Geology, Ecology and Conservation Studies (GECO), Universidad del Cauca, Popayan, 
      Colombia.
FAU - Almanza-Pinzon, Martha I
AU  - Almanza-Pinzon MI
AUID- ORCID: 0000-0002-4045-1207
AD  - Department of Agricultural Sciences, Faculty of Agricultural Sciences, Integrated 
      Production Systems Group (SISINPRO), Universidad del Cauca, Popayan, Colombia.
FAU - Velez-T, Mauricio
AU  - Velez-T M
AUID- ORCID: 0000-0002-1941-4313
AD  - Department of Animal Science, Universidad Nacional de Colombia, Sede Palmira, 
      Colombia.
LA  - eng
PT  - Journal Article
DEP - 20210912
PL  - Germany
TA  - J Anim Breed Genet
JT  - Journal of animal breeding and genetics = Zeitschrift fur Tierzuchtung und 
      Zuchtungsbiologie
JID - 100955807
SB  - IM
MH  - Animals
MH  - *Bombyx/genetics
MH  - Genotype
MH  - Likelihood Functions
MH  - Phenotype
PMC - PMC9293116
OTO - NOTNLM
OT  - Bombyx mori
OT  - genetic parameters
OT  - productive traits
COIS- Authors declare no Conflict of Interests for this article.
EDAT- 2021/09/13 06:00
MHDA- 2022/02/05 06:00
PMCR- 2022/07/18
CRDT- 2021/09/12 21:22
PHST- 2021/08/14 00:00 [revised]
PHST- 2021/05/17 00:00 [received]
PHST- 2021/09/01 00:00 [accepted]
PHST- 2021/09/13 06:00 [pubmed]
PHST- 2022/02/05 06:00 [medline]
PHST- 2021/09/12 21:22 [entrez]
PHST- 2022/07/18 00:00 [pmc-release]
AID - JBG12647 [pii]
AID - 10.1111/jbg.12647 [doi]
PST - ppublish
SO  - J Anim Breed Genet. 2022 Mar;139(2):136-144. doi: 10.1111/jbg.12647. Epub 2021 
      Sep 12.