Effects of Plant Density on Plant Growth before and after Recurrent Selection in Maize. Issue 6 (6th October 2016)
- Record Type:
- Journal Article
- Title:
- Effects of Plant Density on Plant Growth before and after Recurrent Selection in Maize. Issue 6 (6th October 2016)
- Main Title:
- Effects of Plant Density on Plant Growth before and after Recurrent Selection in Maize
- Authors:
- Stein, Michael
Miguez, Fernando
Edwards, Jode - Abstract:
- Abstract : Breeding for higher grain yield in maize ( Zea mays L.) using increased selection densities has produced varieties that are adapted to grow at higher population densities. While the effects of density on final grain yield and plant phenotypes are well known, how density affects the early‐season growth of the plant has been less studied. The objective of this experiment was to examine the effects of high planting density on the growth of stalk, tassel, and ear shoots in unselected Iowa Stiff Stalk Synthetic (BSSS) and Iowa Synthetic Corn Borer No. 1 (BSCB1) and in populations that have been selected for high grain yield via a reciprocal recurrent selection program. The selected and unselected populations were planted at four densities ranging from 3.23 to 12.92 plant m −2 in six environments near Ames, IA, over 3 yr. Increased planting density affected plant organ growth timing differently in BSSS and BSCB1. High‐density delayed stalk biomass accumulation in BSCB1 but not BSSS and delayed ear shoot and tassel biomass accumulation in BSSS but not BSCB1. Differences in biomass accumulation and partitioning between unselected populations were generally not observed between selected populations, suggesting that selection caused a convergence in growth patterns between the populations. Increased density lowered maximum growth rates for all plant organs, but reduction in growth rate as a result of density occurred at higher density in selected populations than unselectedAbstract : Breeding for higher grain yield in maize ( Zea mays L.) using increased selection densities has produced varieties that are adapted to grow at higher population densities. While the effects of density on final grain yield and plant phenotypes are well known, how density affects the early‐season growth of the plant has been less studied. The objective of this experiment was to examine the effects of high planting density on the growth of stalk, tassel, and ear shoots in unselected Iowa Stiff Stalk Synthetic (BSSS) and Iowa Synthetic Corn Borer No. 1 (BSCB1) and in populations that have been selected for high grain yield via a reciprocal recurrent selection program. The selected and unselected populations were planted at four densities ranging from 3.23 to 12.92 plant m −2 in six environments near Ames, IA, over 3 yr. Increased planting density affected plant organ growth timing differently in BSSS and BSCB1. High‐density delayed stalk biomass accumulation in BSCB1 but not BSSS and delayed ear shoot and tassel biomass accumulation in BSSS but not BSCB1. Differences in biomass accumulation and partitioning between unselected populations were generally not observed between selected populations, suggesting that selection caused a convergence in growth patterns between the populations. Increased density lowered maximum growth rates for all plant organs, but reduction in growth rate as a result of density occurred at higher density in selected populations than unselected populations. … (more)
- Is Part Of:
- Crop science. Volume 56:Issue 6(2016)
- Journal:
- Crop science
- Issue:
- Volume 56:Issue 6(2016)
- Issue Display:
- Volume 56, Issue 6 (2016)
- Year:
- 2016
- Volume:
- 56
- Issue:
- 6
- Issue Sort Value:
- 2016-0056-0006-0000
- Page Start:
- 2882
- Page End:
- 2894
- Publication Date:
- 2016-10-06
- Subjects:
- Crop science -- Periodicals
Cultures -- Périodiques
Cultures de plein champ -- Périodiques
Crop science
Nutzpflanzen
Zeitschrift
Pflanzenbau
Periodicals
633 - Journal URLs:
- http://catalog.hathitrust.org/api/volumes/oclc/1565498.html ↗
https://search.proquest.com/publication/30013 ↗
http://crop.scijournals.org/ ↗
http://link.springer.de/link/service/journals/10088/index.htm ↗
http://onlinelibrary.wiley.com/ ↗ - DOI:
- 10.2135/cropsci2015.09.0599 ↗
- Languages:
- English
- ISSNs:
- 0011-183X
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 26931.xml