Abstract
A potential use of induced polyploidy in maize ( Zea mays L.) is to increase total biomass production, for energy or silage production, by capitalizing on the direct consequences of chromosome duplication, i.e., larger cell and plant parts. The objective of this study was to determine the effects of ploidy level per se on morphological traits and grain and stover yields in maize. Three diploid (2 n ) inbreds were derived as paternal haploids from homozygous autotetraploid (4 n ) inbreds. The In and 4 n inbreds and the three possible hybrids at each ploidy level were evaluated in 1986 and 1987 at each of two different planting dates. In general, 4n inbreds and hybrids had longer, wider leaves, larger stalk diameters, and higher grain and stover moisture than their 2 n counterparts. Stover, cob, grain, and total biomass yields were greater for 2 n inbreds and hybrids. Significant ploidy ✕ inbred and ploidy ✕ hybrid interactions resulting in reverse rankings at the 2n and 4 n levels were found for certain traits. Thus, ranking of genotypes at the In level is not necessarily indicative of their rankings at the 4 n level. These results do not support the use of 4 n polyploids to increase total biomass production.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Tetraploid inbreds and hybrids generally had longer, wider leaves and larger stalk diameters than their diploid counterparts.
- Treatment
- 4n inbreds and hybridse0
- Outcome
- longer, wider leaves, larger stalk diameterse0
- Direction
- longere0
- Comparator
- 2 n counterpartse0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Diploid and Tetraploid Maize Inbreds and Hybrids”
e0“In general, 4n inbreds and hybrids had longer, wider leaves, larger stalk diameters, and higher grain and stover moisture than their 2 n counterparts”
Claim · model-written summary
Tetraploid inbreds and hybrids generally had higher grain and stover moisture than diploid counterparts.
- Treatment
- 4n inbreds and hybridse0
- Outcome
- grain and stover moisturee0
- Direction
- highere0
- Comparator
- 2 n counterpartse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Diploid and Tetraploid Maize Inbreds and Hybrids”
e0“In general, 4n inbreds and hybrids had longer, wider leaves, larger stalk diameters, and higher grain and stover moisture than their 2 n counterparts”
Claim · model-written summary
Stover, cob and grain yields were greater for diploid inbreds and hybrids.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Diploid and Tetraploid Maize Inbreds and Hybrids”
e0“Stover, cob, grain, and total biomass yields were greater for 2 n inbreds and hybrids”
Claim · model-written summary
Total biomass yield was greater for diploid inbreds and hybrids.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Diploid and Tetraploid Maize Inbreds and Hybrids”
e0“Stover, cob, grain, and total biomass yields were greater for 2 n inbreds and hybrids”
Claim · model-written summary
Significant ploidy by inbred and ploidy by hybrid interactions gave reverse rankings at the 2n and 4n levels for certain traits.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Diploid and Tetraploid Maize Inbreds and Hybrids”
e0“Significant ploidy ✕ inbred and ploidy ✕ hybrid interactions resulting in reverse rankings at the 2n and 4 n levels were found for certain traits”
Claim · model-written summary
Ranking of genotypes at the diploid level is not necessarily indicative of rankings at the tetraploid level.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Diploid and Tetraploid Maize Inbreds and Hybrids”
e0“ranking of genotypes at the In level is not necessarily indicative of their rankings at the 4 n level”
Claim · model-written summary
The results do not support using tetraploids to increase total biomass production in maize.
- Outcome
- use of 4 n polyploids to increase total biomass productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Diploid and Tetraploid Maize Inbreds and Hybrids”
e0“These results do not support the use of 4 n polyploids to increase total biomass production”