Does a mixture of old and modern winter wheat cultivars increase yield and water use efficiency in water-limited environments?

Y. Fang, B. Xu, L. Liu, Y. Gu, Q. Liu, Neil Turner, Feng-min Li

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Use of mixtures of cultivars is an alternative to a monocultural crop and is considered one option to reduce the risks for producers. The objective of this study was to evaluate the grain yield and water use efficiency of a range of proportions of two winter wheat cultivars - an old landrace (Pingliang 40, PL) and a modern cultivar (Changwu 135, CW). Field experiments were conducted in 2004-2005 and 2005-2006 at Changwu Agricultural Research Station on the Loess Plateau of China. Along with pure stands of each genotype, four mixed stands, 20% PL and 80% CW (PL2:CW8), 40% PL and 60% CW (PL4:CW6), 60% PL and 40% CW (PL6:CW4), 80% PL and 20% CW (PL8:CW2), were established in the first year and a single mixture of 50% PL and 50% CW (PL5:CW5) was established in the second year. The grain yield of the mixtures fell between the yields of the respective monocultures under mild drought condition in 2005, while the yield of PL5:CW5 was not significantly different from that of the modern cultivar, CW, but higher than that of the landrace PL under the more unfavorable conditions (moderate drought) of 2006 (P
Original languageEnglish
Pages (from-to)12-21
JournalField Crops Research
Volume156
DOIs
Publication statusPublished - 2014

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