GrainGenes Environment Report: Ciudad Obregon 1994-5 Kb

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Environment

Ciudad Obregon 1994-5 Kb

Year

1994-5

Location

Ciudad Obregon, Sonora, MEX

Latitude

27 N

Longitude

109 56' W

Elevation

39 meters

Institute

CIMMYT

Soil Texture

Brown clay loam soils of pH 7.5.

Remarks

The RI lines and parents were planted in isolated fields in plots consisting of 2 m beds at 75 cm spacing, each seeded with two rows 15 cm apart at the top of the bed. Duplicate trials were planted but plots were not randomized. Artificial inoculation employed sporidia harvested from four-week-old cultures of T. indica grown from teliospores collected from various Yaqui Valley locations. At the booting stage when awns were just emerging, twelve spikes of each entry were inoculated with 2 ml of inoculum via hypodermic syringe (Aujla et al., 1980). Each ml of inoculum carried approximately 10,000 secondary sporidia suspended in water. Inoculations were done in the afternoon. Relative humidity was maintained at 90% via intermittent overhead misting of plants, 3 to 5 times/d for 8 min depending upon prevailing weather conditions.

Trait Study

Karnal bunt, Nelson98

Trait Scores

Karnal bunt at Obregon 1994-5 #1

Karnal bunt at Obregon 1994-5 #2


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