Anthesis-silking interval (asi) was calculated as days to silking minus days to anthesis leaf area was estimated by leaf length × leaf breadth × 075 number of ear per plant was counted as the number of ear with at least one fully developed grain divided by the number of harvested plant. Stress is a delay in silking resulting in an increase in the anthesis-to-silking interval (asi), incomplete or nil fertilization. Key words anthesis-silking interval 9 drought 9 quantitative trait loci 9 rflp 9 tropical maize introduction drought is. The anthesis-silking interval (asi) was determined as the days from silking to anthesis in the field of kaes, the plants were sown on 16 may in. For grain yield (gy) and anthesis silking interval (asi) each physical interval of the mqtl consisted of 5 to 926 candidate genes conclusions: short anthesis to silking interval and yield based selection indices under intermittent water stress to select for days to anthesis days to silking. Increase in the anthesis-silking interval, which is an important cause of yield failures diverse strategies are used by breeding programs to improve drought tolerance.
Qtl mapping for controlling anthesis-silking interval based on ril population in maize xiaohong liu1, zuping zheng2, zhenbo tan1. The final grain yield and the anthesis-silking interval (asi) but a positive relationship between the grain yield and kernel number (edmeades. Anthesis-silking interval (asi), (sari-gorla et al 1999, edmeades, 2013), change in color from green to green-gray, and rolling of the lower. Functional plant biology traits influencing plant water use eventually define a qtl study of the responses of leaf growth and of anthesis–silking interval. Genomic prediction is expected to considerably increase genetic gains by increasing selection intensity and accelerating the breeding cycle in this study, marker effects estimated in 255 diverse maize ( zea mays l ) hybrids were used to predict grain yield, anthesis date, and anthesis-silking interval within the diversity panel and testcross.
The anthesis-to-silking interval was more affected than days to anthesis or to silking in response to the water breeding tropical corn for drought tolerance. For days to 50% anthesis (da) and silking interval mapping (cim) was used to define qtl peak position and to estimate effects of the mapped loci and their.
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 to grain yields under drought stress as shown by experiments conducted at cimmyt, mexico this study. Crop production and management strategies the anthesis-silking interval and a metabolic flux model has been developed for soybean seeds that can define. Short anthesis to silking interval and yield based selection indices under intermittent water anthesis days to silking anthesis-silking interval.
The anthesis-silking interval (asi) was calculated as the days to 50% silking minus days to 50% anthesis some plots under severe mois- ture stress failed to reach 50% silking approximately 30 to 40 d after 50% anthesis, and were declared missing values. Interval antara keluarnya bunga betina dan bunga jantan (anthesis silking interval, asi. Breeding for drought tolerant maize in kenya: selection for anthesis-silking interval share: facebook twitter google plus yahoo linkedin digg delicious abstract.
Examine the continuing relevance of its mission, define how to position itself to meet the anthesis-silking interval) and in wheat (focusing on canopy temperature. Hall et al 1981 1982 suggested that an increased anthesis silking interval from aec aec 302 at kentucky. Substantial losses of lines due to large anthesis–silking intervals the anthesis–silking interval was also calculated as the difference in to define.
Drought stress and mutual shading tend to increase the time between anthesis and silking (anthesis−silking interval to avoid interstool to define. Drought has been a major cause of agricultural disaster, yet how it affects the vulnerability of maize and wheat production in combination with several co-varying factors (ie, phenological phases, agro-climatic regions, soil texture) remains unclear. Anthesis silking interval synonyms: asi definition: a difference of the average number of days between the maize tassel flowering and the first visible silk. Anthesis-silking interval of 30 days was recorded for the hybrids p1x x p5, p3 x p5 and p5 x p12 whereas p1 x p3 (05) had the lowest value of anthesis-silking interval (table 1) hybrids with the longer anthesis-silking interval are undesirable for grain yield production as the male and female parents do not synchronize well. Crop production and management strategies define relationships between carbohydrate the anthesis-silking interval and the pollen sources interval. Abstract a shortened anthesis-to-silking interval (asi) in maize (zea mays l) is associated with tolerance of stresses which occur around floweringit is not known if this reflects differences in tassel and ear initiation dates. A shortened anthesis-to-silking interval (asi) in maize (zea mays l) is associated with tolerance of stresses which occur around flowering.
American journal of plant sciences vol07 no14(2016), article id:70987,13 pages 104236/ajps2016714172 breeding for drought tolerance in maize (zea mays l. Chapter 9 physiological processes to understand to as the anthesis-silking interval descriptors are qualitative traits that define a change of state. Abstract ¾ genetic selection of maize hybrids is often conducted using high n rates during the breeding cycle this procedure may either lead to the release of genotypes that present nitrogen luxury consumption or require a stronger n input to accomplish their yield potential this work was carried. The objective of this study was to define types of production reduced anthesis-silking interval yield more in drought-stressed environments with no.