Authors: X.H. Liu, S.L. He, Z.P. Zheng, Z.B. Tan, Z. Li and C. He
Kernel number per ear (KNE) is one of the most important yield-related agronomic traits in maize (Zea mays). To clarify its genetic basis, we made a quantitative trait locus (QTL) analysis of KNE in a recombinant inbred line population derived from lines Mo17 and Huangzao4, under two nitrogen (N) regimes. Seven QTLs, on chromo.. Read More»
Authors: M.M. Shah, S.W. Hassan, K. Maqbool, I. Shahzadi and A. Pervez
We compared DNA-based genetic diversity estimates with conventional estimates by investigating agronomically important traits in maize grown in the northwestern region of Pakistan. RAPD markers were used to characterize 10 commonly cultivated maize genotypes. The same material was tested for phenotypic variation of quantitativ.. Read More»
Authors: R.W. Muhammad, A. Qayyum, M.Q. Ahmad, A. Hamza, M. Yousaf, B. Ahmad, M. Younas, W. Malik, S. Liaqat, E. Noor
Genetic diversity in crops is essential to make improvements related to superior germplasms. Implementation of molecular markers to identify suitable genotypes speeds up the breeding progress by enhancing selection efficiency. This study was carried out to probe genetic diversity among 21 maize genotypes using 20 inter simple .. Read More»
Authors: F. Deng, S.W. Zhu, L.J. Wu and B.J. Cheng
The relationship between pollen germination and the dynamic organization of the actin cytoskeleton during pollen germination is a central theme in plant reproductive biology research. Maize (Zea mays) pollen grains were implanted with 30 keV argon ion (Ar+) beams at doses ranging from 0.78 × 1015 to 13 × 1015 ions/.. Read More»
Authors: F. Chen, S.W. Zhu, Y. Xiang, H.Y. Jiang and B.J. Cheng
The ae (amylose extender) recessive mutant alleles in maize are an important genetic resource for the development of high-amylose cultivars. On the basis of ae allele sequences (from the National Center for Biotechnology Information), the ae mutant alleles were cloned from high-amylose maize and the allelic Ae gene from common.. Read More»
Authors: C.A.M. Oliveira, C.M. Kommers, F.K.M. Lehmann, A.S.K. Fonseca, N. Ikuta and V.R. Lunge
Conventional and genetically modified (GM) maize cultivars have been widely planted in Brazil to produce grains for processed food, feed, or to be consumed fresh as corn ears. This study used real-time PCR to detect GM maize in processed products and fresh commercial corn ears produced in the last two years in South Brazil. Ei.. Read More»
Authors: Y.L. Qian, X.Q. Zhang, L.F. Wang, J. Chen, B.R. Chen, G.H. Lv, Z.C. Wu, J. Guo, J. Wang, Y.C. Qi, T.C. Li, W. Zhang, L. Ruan and X.L. Zuo
In order to understand the effect of grain moisture of inbred lines at the silking and physiological maturity stages on kerneldehydration rate, 59 maize inbred lines from six subgroups were selected. Grain moisture was measured and QTLs associated with kernel dehydration were mapped. A rapid dehydration evaluation and association analysis revealed eight i.. Read More»
Authors: F. Etedali, B. Baghban Kohnehrouz, M. Valizadeh, A. Gholizadeh and M.A. Malboobi
The development of meiotic division and associated genetic recombination paved the way for evolutionary changes. However, the secondary and tertiary structure and functional domains of many of the proteins involved in genetic recombination have not been studied in detail. We used the human Dmc1 gene product along with secondar.. Read More»
Authors: H.Y. Jiang, Z. Li, J. Zhao, Q. Ma, B.J. Cheng and S.W. Zhu
Soil contains a large amount of phosphorus, but plants cannot absorb most of this phosphorus effectively. Low inorganic phosphorus has been singled out as a major constraint that leads to a perpetually low Zea mays (maize) grain yield. The fundamental approach to solving this problem is to screen new genes of low phosphorous (LP) tolerance. Consequently, .. Read More»
Authors: R.H. Yu, Y.L. Wang, Y. Sun and B. Liu
We examined the genetic diversity of 80 inbred waxy maize lines using 22 SSR molecular markers that could be used to achieve heterosis in waxy maize. Eighty inbred waxy maize lines with different phenotypes, 40 yellow, 25 white, 13 black, and two red lines were analyzed by SSR molecular marker fingerprint and cluster analysis... Read More»