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Agronomy 2019, 9(2), 44; https://doi.org/10.3390/agronomy9020044

Variation in Stripe Rust Resistance and Morphological Traits in Wild Emmer Wheat Populations

1
Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
2
Institute of Evolution, University of Haifa, 199 Abba-Hushi Avenue, Mt. Carmel, 3498838 Haifa, Israel
3
College of Life Science, Sichuan Agricultural University, Ya’an 625014, Sichuan, China
4
The Institute for Cereal Crops Improvement, Tel Aviv University, P.O. Box 390406139001 Tel Aviv, Israel
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Received: 1 December 2018 / Revised: 13 January 2019 / Accepted: 17 January 2019 / Published: 22 January 2019
(This article belongs to the Section Crop Breeding and Genetics)
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Abstract

Wild emmer wheat (Triticum dicoccoides), the tetraploid progenitor of cultivated wheats, is indigenous to the Near East Fertile Crescent. An important center of distribution is found today in and around the catchment area of the upper Jordan Valley in Israel and surrounding regions. In the current study, the field stripe rust resistance and morphological traits were analyzed using 98 sample accessions that represented the geographical distribution of wild emmer populations in Israel and its vicinity. The resistance tests at two field locations revealed that the majority of the wild emmer accessions possess quantitative resistance against stripe rust. This could be due to the high frequency of Yr36 in the wild emmer populations. The identification of potentially novel stripe rust resistance in this set of germplasm is highly significant. In total, 11 morphological traits were examined in this study. Wide range of natural variation was revealed in the tested morphological traits. Most of the morphological traits had significant correlations with climate variables, indicating that the local environmental conditions have a profound effect on shaping the genetic structure of wild emmer wheat. Our results suggest that wild emmer wheat has the enormous potential to improve stripe rust resistance and various important agronomical traits in wheat. View Full-Text
Keywords: morphology; stripe rust resistance; variation; wild emmer wheat; ecogeographical variables morphology; stripe rust resistance; variation; wild emmer wheat; ecogeographical variables
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Huang, L.; Feng, L.; He, Y.; Tang, Z.; He, J.; Sela, H.; Krugman, T.; Fahima, T.; Liu, D.; Wu, B. Variation in Stripe Rust Resistance and Morphological Traits in Wild Emmer Wheat Populations. Agronomy 2019, 9, 44.

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