Abstract
A Jordanian durum wheat collection consisting of 132 landraces was evaluated in an arid and a semiarid location for 21 morphological and developmental traits. Phenotypic diversity indices (H') were calculated for traits, districts, and regions of collection. Average diversity for Jordan was 0.675 ± 0.05. The pattern of variation of individual traits varied among districts and among regions. Polymorphism was high for waxiness (H' = 0.95), lodging resistance (0.91), stem solidness (0.86), glume color (0.80), and fertility of the basal floret (0.80). However, H' estimates were relatively low for early growth vigor (0.49), seed color (0.44) and juvenile growth habit (0.19). A clinal pattern was observed for resistance to common bunt, Tillelia foetiila (H' = 0.73), stripe rust, Puccinia striiformis (H' = 0.74), and powdery mildew, Erysiphe graminis f.sp. tritici (H' = 0.63). The frequency of resistant entries increased from the xeric south to the mesic north. Average diversity for developmental traits (i.e., days to heading, days to maturity, and filling period) was significantly higher in the semiarid (H'= 0.847 ± 0.05) than in the arid (H'= 0.658 ± 0.12) location. A hierarchical analysis of variance indicated that significant differences for H' estimates existed among regions and among districts within regions of collection. Landraces and districts with high frequency of agronom-ically desirable traits have been identified.
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Claims 12
Claim · model-written summary
Average phenotypic diversity in the Jordanian durum wheat collection was 0.675 ± 0.05.
- Taxon
- durum wheat
Triticum turgidum subsp. durumt0 - Material
- landracest0
- Outcome
- Average diversitye0
- Value
- 0.675 ± 0.05e0
- Setting
- Jordane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“Average diversity for Jordan was 0.675 ± 0.05.”
Claim · model-written summary
Patterns of individual trait variation differed among districts and regions.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- pattern of variation of individual traitse0
- Setting
- districts and among regionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“The pattern of variation of individual traits varied among districts and among regions.”
Claim · model-written summary
Waxiness, lodging resistance, and stem solidness had high polymorphism, with diversity indices of 0.95, 0.91, and 0.86, respectively.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- Polymorphisme0
- Value
- H' = 0.95e0
- Qualifier
- lodging resistance (0.91), stem solidness (0.86)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“Polymorphism was high for waxiness (H' = 0.95), lodging resistance (0.91), stem solidness (0.86)”
Claim · model-written summary
Glume color and basal floret fertility each had a high diversity index of 0.80.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- glume colore0
- Value
- 0.80e0
- Qualifier
- fertility of the basal floret (0.80)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“glume color (0.80), and fertility of the basal floret (0.80)”
Claim · model-written summary
Early growth vigor, seed color, and juvenile growth habit had relatively low diversity indices of 0.49, 0.44, and 0.19.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- early growth vigore0
- Value
- 0.49e0
- Qualifier
- seed color (0.44) and juvenile growth habit (0.19)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“H' estimates were relatively low for early growth vigor (0.49), seed color (0.44) and juvenile growth habit (0.19)”
Claim · model-written summary
Resistance to common bunt displayed a clinal pattern.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Interactor
- Tillelia foetiilae0pathogen
- Outcome
- resistance to common bunte0
- Value
- H' = 0.73e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“A clinal pattern was observed for resistance to common bunt, Tillelia foetiila (H' = 0.73)”
Claim · model-written summary
Resistance to stripe rust displayed a clinal pattern.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Interactor
- Puccinia striiformis
Puccinia striiformise0pathogen - Outcome
- stripe ruste0
- Value
- H' = 0.74e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“stripe rust, Puccinia striiformis (H' = 0.74)”
Claim · model-written summary
Resistance to powdery mildew displayed a clinal pattern.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Interactor
- Erysiphe graminis f.sp. tritici
Blumeria graminis f. sp. triticie0pathogen - Outcome
- powdery mildewe0
- Value
- H' = 0.63e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“powdery mildew, Erysiphe graminis f.sp. tritici (H' = 0.63)”
Claim · model-written summary
The frequency of resistant landrace entries increased from the xeric south to the mesic north.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- frequency of resistant entriese0
- Direction
- increasede0
- Setting
- xeric south to the mesic northe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“The frequency of resistant entries increased from the xeric south to the mesic north.”
Claim · model-written summary
Average diversity for developmental traits was significantly higher in the semiarid than in the arid location.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- Average diversity for developmental traitse0
- Direction
- highere0
- Value
- H'= 0.847 ± 0.05e0
- Qualifier
- H'= 0.658 ± 0.12e0
- Comparator
- aride0
- Setting
- semiaride0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“Average diversity for developmental traits (i.e., days to heading, days to maturity, and filling period) was significantly higher in the semiarid (H'= 0.847 ± 0.05) than in the arid (H'= 0.658 ± 0.12) location.”
Claim · model-written summary
Diversity indices differed significantly among regions and among districts within regions.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- differences for H' estimatese0
- Setting
- regions and among districts within regions of collectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“significant differences for H' estimates existed among regions and among districts within regions of collection”
Claim · model-written summary
The study identified landraces and districts with high frequencies of agronomically desirable traits.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- high frequency of agronom-ically desirable traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat landraces”
e0“Landraces and districts with high frequency of agronom-ically desirable traits have been identified.”