نتایج جستجو برای: silking
تعداد نتایج: 268 فیلتر نتایج به سال:
Investigation was carried out to ascertain the genetic architecture for heat tolerance and yield components from diallel crosses in maize (Zea mays L.). The combining ability both normal stress conditions revealed highly significant mean squares due general (GCA) specific (SCA) direct reciprocal all characters except anthesis-silking interval condition of crosses. Estimate variance 13 higher SC...
Lodging is one of the main factors causing yield loss maize under high-density planting conditions. Root lodging as an important type has received little attention. Plant growth regulators (PGRs) and nitrogen fertilizer can coordinate relationship between root yield. This two-year field experiment was conducted with two levels N225 (225 kg ha−1) N300 (300 at a high density (90,000 plants during...
Days to silking (DTS) is one of the most important traits in maize (Zea mays). To investigate its genetic basis, a recombinant inbred line population was subjected to high and low nitrogen (N) regimes to detect quantitative trait loci (QTLs) associated with DTS. Three QTLs were identified under the high N regime; these explained 25.4% of the phenotypic variance. Due to additive effects, t...
A maize pot experiment was conducted to compare the difference of N distribution between bulk and rhizospheric soil after chemical fertilizer with or without straw amendment at an equivalent rate using a 15N cross-labeling technique. Soil pools, their abundances were determined during growth. The urea plus treatment significantly (p < 0.05) increased recovery in 26.0% assimilated by maize. C...
A long period of silk viability is critical for a good seed setting rate in maize (Zea mays L.), especially for inbred lines and hybrids with a long interval between anthesis and silking. To explore the molecular mechanism of silk viability and its heterosis, three inbred lines with different silk viability characteristics (Xun928, Lx9801, and Zong3) and their two hybrids (Xun928×Zong3 and Lx98...
Using advanced intermated populations has been proposed as a way to increase the accuracy of mapping experiments. An F(3) population of 300 lines and an advanced intermated F(3) population of 322 lines, both derived from the same parental maize inbred lines, were jointly evaluated for dry grain yield (DGY), grain moisture (GM), and silking date (SD). Genetic variance for dry grain yield was sig...
Multiparental designs combined with dense genotyping of parents have been proposed as a way to increase the diversity and resolution of quantitative trait loci (QTL) mapping studies, using methods combining linkage disequilibrium information with linkage analysis (LDLA). Two new nested association mapping designs adapted to European conditions were derived from the complementary dent and flint ...
Maize breeders continue to seek new sources of aflatoxin resistance, but most lines identified as resistance sources are late maturing. The vast difference in flowering time makes it hard to cross these lines with proprietary commercial lines that mature much earlier and often subjects the reproductive phase of these resistant lines to the hottest and driest portion of the summer, making silkin...
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