文献类型： 外文期刊

作者： Matzrafi, Maor ¹ ; Herrmann, Ittai ² ; Nansen, Christian ³ ; Kliper, Tom ¹ ; Zait, Yotam ¹ ; Ignat, Timea ⁵ ; Siso, Da ¹ ;

作者机构： 1.Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, Rehovot, Israel

2.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Remote Sensing Lab, Beer Sheva, Israel

3.Univ Calif Davis, Dept Entomol & Nematol, Davis, CA 95616 USA

4.Zhejiang Acad Agr Sci, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou, Peoples R China

5.Agr Res Org, Volcani Ctr, Inst Agr Engn, Bet Dagan, Israel

6.Agr Res Org, Newe Yaar Res Ctr, Dept Plant Pathol & Weed Res, Ramat Yishay, Israel

7.Univ Wisconsin, Dept Forest & Wildlife Ecol, Madison, WI 53706 USA

关键词： herbicide resistance evolution;hyperspectral imaging and sensing;precision agriculture;proximal sensing;trifloxysulfuron-methyl

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2017 年 8 卷

页码：

收录情况： SCI

摘要： Weed infestations in agricultural systems constitute a serious challenge to agricultural sustainability and food security worldwide. Amaranthus palmeri S. Watson (Palmer amaranth) is one of the most noxious weeds causing significant yield reductions in various crops. The ability to estimate seed viability and herbicide susceptibility is a key factor in the development of a long-term management strategy, particularly since the misuse of herbicides is driving the evolution of herbicide response in various weed species. The limitations of most herbicide response studies are that they are conducted retrospectively and that they use in vitro destructive methods. Development of a non-destructive method for the prediction of herbicide response could vastly improve the efficacy of herbicide applications and potentially delay the evolution of herbicide resistance. Here, we propose a toolbox based on hyperspectral technologies and data analyses aimed to predict A. palmeri seed germination and response to the herbicide trifloxysulfuron-methyl. Complementary measurement of leaf physiological parameters, namely, photosynthetic rate, stomatal conductence and photosystem II efficiency, was performed to support the spectral analysis. Plant response to the herbicide was compared to image analysis estimates using mean gray value and area fraction variables. Hyperspectral reflectance profiles were used to determine seed germination and to classify herbicide response through examination of plant leaves. Using hyperspectral data, we have successfully distinguished between germinating and non-germinating seeds, hyperspectral classification of seeds showed accuracy of 81.9 and 76.4%, respectively. Sensitive and resistant plants were identified with high degrees of accuracy (88.5 and 90.9%, respectively) from leaf hyperspectral reflectance profiles acquired prior to herbicide application. A correlation between leaf physiological parameters and herbicide response (sensitivity/resistance) was also demonstrated. We demonstrated that hyperspectral reflectance analyses can provide reliable information about seed germination and levels of susceptibility in A. palmeri. The use of reflectance-based analyses can help to better understand the invasiveness of A. palmeri, and thus facilitate the development of targeted control methods. It also has enormous potential for impacting environmental management in that it can be used to prevent ineffective herbicide applications. It also has potential for use in mapping tempo-spatial population dynamics in agro-ecological landscapes.