PMID- 12815451
OWN - NLM
STAT- MEDLINE
DCOM- 20040227
LR  - 20111209
IS  - 0018-067X (Print)
IS  - 0018-067X (Linking)
VI  - 91
IP  - 1
DP  - 2003 Jul
TI  - Heterosis for biomass yield and related traits in five hybrids of Arabidopsis 
      thaliana L. Heynh.
PG  - 36-42
AB  - Heterosis is of utmost economic importance in plant breeding. However, its 
      underlying molecular causes are still unknown. Given the numerous advantages of 
      Arabidopsis thaliana as a model species in plant genetics and genomics, we 
      assessed the extent of heterosis in this species using five hybrids derived from 
      five ecotypes. Parents, F(1) and F(2), generations in both reciprocal forms were 
      grown in a greenhouse experiment with four replications. Mid-parent heterosis 
      (MPH) and best-parent heterosis (BPH) averaged across hybrids were surprisingly 
      high for biomass yield (MPH: 60.3%; BPH: 32.9%) and rosette diameter (MPH: 49.4%; 
      BPH: 34.8%), but smaller for flowering date (MPH: 27.5%; BPH: 18.5%), seed yield 
      (MPH: 18.9%; BPH: 1.7%), and yield components. Individual hybrids varied 
      considerably in their MPH and BPH values for all traits, one cross displaying 
      140.1% MPH for biomass yield. MPH was not associated with parental genetic 
      distance determined from molecular markers. Reciprocal effects were significant 
      only in a few cases. With a proper choice of hybrids, our results encourage the 
      use of Arabidopsis as a model species for investigating the molecular causes of 
      heterosis.
FAU - Barth, S
AU  - Barth S
AD  - Institute of Plant Breeding, Seed Science and Population Genetics, University of 
      Hohenheim, Fruwirthstrasse 21, D-70599 Stuttgart, Germany.
FAU - Busimi, A K
AU  - Busimi AK
FAU - Friedrich Utz, H
AU  - Friedrich Utz H
FAU - Melchinger, A E
AU  - Melchinger AE
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Heredity (Edinb)
JT  - Heredity
JID - 0373007
SB  - IM
MH  - Arabidopsis/genetics/*growth & development
MH  - *Biomass
MH  - Chimera/*genetics
MH  - Flowers/growth & development
MH  - Hybrid Vigor/*genetics
MH  - Seeds/growth & development
EDAT- 2003/06/20 05:00
MHDA- 2004/02/28 05:00
CRDT- 2003/06/20 05:00
PHST- 2003/06/20 05:00 [pubmed]
PHST- 2004/02/28 05:00 [medline]
PHST- 2003/06/20 05:00 [entrez]
AID - 6800276 [pii]
AID - 10.1038/sj.hdy.6800276 [doi]
PST - ppublish
SO  - Heredity (Edinb). 2003 Jul;91(1):36-42. doi: 10.1038/sj.hdy.6800276.