The aim of this investigation was to estimate the effects of total early rainfall and total rainfall during anthesis - silking interval (asi) on grain yield and grain moisture in nine hybrids of maize. Front plant sci 2017 18:267 epub 2017 mar 1 department of life science, dongguk university-seoul seoul, south korea. Anthesis silking interval (079) had the highest positive direct effect on yield followed by cob diameter (031), cob length (031) and plant height (004) indicating the effectiveness of direct selection. Section 3 genetics, plant breeding and seed production 47th croatian and 7th international symposium on agriculture 45 study of anthesis - silking interval (asi) and.
This corn is in the anthesis-silking interval (asi) silk is emerging along the stalks above, anthers are emerging from the tassels the time difference between these asi events has a big impact on yield. Maize, the most important stable crop in kenya is affected by drought stress mostly at flowering stages causing delay in silk emergence the anthesis to silking interval (asi) is highly correlated. One universal phenomenon observed when maize flowers are under drought is the delay of silking in relation to pollen shed, giving rise to the anthesis‐silking interval (asi) whose duration is highly correlated with kernel set (duplessis and dijkhuis, 1967 edmeades et al, 2000a.
The objectives of the study were to identify genetic segments responsible for the expression of anthesis-silking interval (asi), ear setting and grain yield, and to. In over 90% of the trials, ears plant−1, kernels plant−1, weight kernel−1, anthesis-silking interval (asi), tassel branch number and visual scores for leaf angle, leaf rolling and leaf. Population means for grain yield, anthesis-silking interval (asi), and number of ears per plant (epp) were small frequency distributions for asi and leaf rolling were different for the two populations. Chapter four addresses changes in characteristics including flag leaf angle, anthesis- silking interval (asi), plant height, tassel branch number, and total number of leaves per plant that have occurred in concert with increased planting densities and recurrent selection. Abstract stress caused by early weed competition is known to delay the rate of maize development which may result in a decrease in kernel number kernel number in maize is correlated negatively with the length of the anthesis-silking interval (asi.
Secondary traits (ears per plant, anthesis-silking interval and leaf senescence) that show differential expression between optimal and stress conditions is genetically variable and is correlated with grain yield and is commonly used to increase selection efficiency (bolanos. Bolaños j, edmeades go (1996) the importance of the anthesis-silking interval in breeding for drought tolerance in tropical maize field crops res 48:65-80 crossref google scholar cimmyt-zimbabwe (2000) 2000 research highlights. Leaf growth and anthesis-silking interval (asi) are the main determinants of source and sink strengths of maize via their relations with light interception and yield, respectively they depend on the abilities of leaves and silks to expand under fluctuating environmental conditions, so the possibility is raised that they may have a partly. Weak, 9-very good anthesis-silking interval (asi) was noted in days between anthesis and silking, and prolificacy (two cobs per plant) was noted in percent.
Preferred name: anthesis silking interval synonyms: asi (related) antskit (related) flwslkinter (related) definitions: a difference of the average number of days between the maize tassel flowering and the first visible silk (stigma) on the maize ear. A two-year field experiment was conducted to evaluate the effects of plant density on tassel and ear differentiation, anthesis- silking interval (asi), and grain yield formation of two types of modern maize hybrids (zhongdan 909 (zd909) as tolerant. At cimmyt have demonstrated that a short anthesis to silking interval (asi) is an important component of drought tolerance in maize in this study, one hundred and thirty five f.
Anthesis-silking interval (asi) was quantitatively inherited with minor genes effects both asi and tlb showed moderate values of heritability ranging from . Anthesis silking interval anthesis silking interval asi chlorophyll content chlorophyll content chl leaf chlorophyll content grain yield grain yield gy grain yield per unit area, either field weight basis, dry weight basis or adjusted to 125% grain moisture. The drought-tolerant hybrid had a narrower anthesis-silking interval (asi), greater leaf area index (lai) for all n rates across experiments and drought stress at milk maize phenological stage, and lower leaf chlorophyll content in all levels of drought stress.