Abstract
Open-pollinated variety (OPV) is a potential gene source for developing new high yielding maize hybrid. Grouping of maize OPV varieties requires a model analysis tool such as the fuzzy clustering in order to identify the similarity measure. The objective of the research was to characterize the similarity among OPV varieties for further research including site-specific OPV development. As many as 35 OPV varieties were assessed and clustered into groups by using fuzzy c means algorithm. The result indicated that fuzzy model clustering enabled to develop a relationship among the OPV maize and morphological traits. Based on the similarity among agronomic characters, OPV maize varieties can be clustered into four group. Group I represent high productivity, drought and disease tolerant varieties. Group II contains maize varieties characterized by late silking and maturity days. Further, Group III represent varieties with the earliest maturity varieties and low grain yield. Group IV indicates the OPV maize having moderate grain yield and susceptible to downy mildew disease. The information on similarity among variety or group can be used for varietal improvement programs such as recombination and molecular based gene introgression not only for maize but also other crops. Our findings also provide insights to understand similarity among each variety, which are considered to be valuable for future OPV breeding programs such as drought, lodging and disease resistant varieties.
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Claims 8
Claim · model-written summary
Fuzzy clustering related maize varieties to morphological traits.
- Outcome
- relationship among the OPV maize and morphological traitse0
Zea maysNot reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fuzzy model clustering enabled to develop a relationship among the OPV maize and morphological traits”
Claim · model-written summary
The varieties clustered into four groups by agronomic similarity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Based on the similarity among agronomic characters, OPV maize varieties can be clustered into four group.”
Claim · model-written summary
Group I had high productivity and drought and disease tolerance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Group I represent high productivity, drought and disease tolerant varieties.”
t0“maize”
Claim · model-written summary
Group II had late silking and maturity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Group II contains maize varieties characterized by late silking and maturity days.”
Claim · model-written summary
Group III had the earliest maturity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Group III represent varieties with the earliest maturity varieties and low grain yield.”
t0“maize”
Claim · model-written summary
Group III had low grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Group III represent varieties with the earliest maturity varieties and low grain yield.”
t0“maize”
Claim · model-written summary
Group IV had moderate grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Group IV indicates the OPV maize having moderate grain yield and susceptible to downy mildew disease.”
Claim · model-written summary
Group IV was susceptible to downy mildew.
- Material
- Group IVe0
- Interactor
- downy mildewPeronosporaceaee0pathogen
- Outcome
- susceptible to downy mildew diseasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Group IV indicates the OPV maize having moderate grain yield and susceptible to downy mildew disease.”