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^ШХР: *http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1445-6664 /issues (http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1445-6664/ issues)
^АВТ: Phongphitak E.; Maneechote C.; Rerkasem B.; Jamjod S.
^ЗГЛ: Inheritance of resistance to fenoxaprop-p-ethyl in sprangletop (Leptochloa chinensis L. Nees) [Наследование резистентности к феноксапроп-П-этилу у лептохлои китайской (Leptochloa chinensis), засоряющей плантации риса, возделываемого по безрассадной технологии в условиях Таиланда]
^ВЫХ: Weed Biology & Management, 2014; Vol.14,N 3. - P. 159-166
^ДАТ: 2014
^ПРМ: Bibliogr.:p.166
+Реферат:

^РЕФ: Sprangletop (Leptochloa chinensis L. Nees) is a serious grass weed in direct-seeded rice cropping systems in Thailand. One population of sprangletop, BLC1, was found to be resistant to fenoxaprop-p-ethyl at 62-fold the concentration of a susceptible biotype, SLC1. This study elucidated the inheritance of resistance to fenoxaprop-p-ethyl in this sprangletop BLC1 genotype. The reaction to the herbicide at 0.12-2.4 mg ai L−1 was determined in the seedlings of self-pollinated resistant BLC1, susceptible SLC1 and SLC1 that had been allowed to cross-pollinate with BLC1. At 0.24 mg ai L−1, all the seedlings of SLC1 were killed, while 99% of BLC1 survived, along with 5% of the cross-pollinated SLC1 seedlings, which were considered to be putative F1 hybrids. The root and shoot lengths of the F1 hybrids in 0.24 mg ai L−1 of fenoxaprop-p-ethyl, relative to those in the absence of the herbicide, were close to or the same as the resistant parent, indicating that the resistance is a nearly complete to complete dominant trait. One-hundred-and-forty-one of the F2-derived F3 families were classified by their response to the herbicide at 0.24 and 0.48 mg ai L−1 into 39 homozygous susceptible : 72 segregating : 30 homozygous resistant, fitted with a 1:2:1 ratio at χ2 = 1.21 and P = 0.56, indicating that the resistance to fenoxaprop-p-ethyl in the sprangletop BLC1 genotype is controlled by a single gene. aref1

^TRN: 1648854
^ВИД: Статья из книги
^ЯЗК: Английский
+Индексирование:

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