Maize growth stages researchers can also compare the phenology of maize under different environmental conditions and experimental anthesis or male. Sciknow publications ltd jra 2013, 1(5): 84-90 journal of renewable agriculture doi: 1012966/jra08,032013 ©attribution 30 unported (cc by 30) a nthesis to silking interval usefulness in developing d rought tolerant m aize k ahiu ngugi -hurqr &khvhuhn &hflold 0xfklud dqg hrujh &khplqlqj¶zd dept of plant. Maize breeders seek hybrids and their paired inbreds with minimum anthesis-silking interval (asi) for success of hybrids the narrow asi is (anthesis-silking interval) very useful trait to increase kernel numbers in maize genotype(s) (bolanos and edmeades, 1996 ribaut et al, 1996) in addition to other morpho-physiological traits. Studies on genetic variability in maize (zea mays l) whereas, days to 50 % tasseling, days to 50 % silking and anthesis-silking interval increased by 5 %. 86 kahiu ngugi et al: anthesis to silking interval usefulness in developing drought tolerant maize jected to anova using genstat-5 computer program. Maize plants were sown at the planting density of 8 – 9 plants m–2 in the end of may in 2003 maize plants expanded 6 – 9 leaves in the cool and cloudy july of 2003 anthesis and silking occurred at the end of august then, many tassels with few or no spikelets were observed (fig 4. Springerlink search home (male flowering, anthesis-to bänziger m, westgate me (2000) the role and regulation of the anthesis-silking interval in maize in.
Anthesis in a maize recombinant inbred line population phytopathology 96:1067-1071 a recombinant inbred line population derived from a cross between the. B alint-k urti, p j, m d k rakowsky, m p j ines, l a r obertson, t l m olnár et al, 2006 identification of quantitative trait loci for resistance to southern leaf blight and days to anthesis in a maize recombinant inbred. The plant cell wall plays vital roles in various aspects of the plant life cycle it provides a basic structure for cells and gives mechanical rigidity to the whole plant. Modeling anthesis to silking in maize using a plant biomass framework author(s) : borrás, l astini, j p westgate, m e severini, a d author affiliation : agronomy dep, iowa state univ, 1301 agronomy hall, ames, ia 50011-1010, usa. Drought-induced changes in anthesis-silking interval are related to silk expansion: a spatio-temporal growth analysis in maize it corresponded to the anthesis.
Meta-analyses of qtl for grain yield and anthesis silking interval in 18 maize populations evaluated under water-stressed and well-watered environments. Genetic analysis of ear development and tassel architecture in gdu to anthesis and plant height in a maize population of 218 rils derived from inbreds c103. Maize populations c magorokosho, kv pixley1 and p tongoona2 key words: anthesis, heritability, recurrent selection, secondary traits.
Poaceae (poe-ay-see-ay) or gramineae (grammy-nee-ay) is a large and nearly ubiquitous family of monocotyledonous flowering plants known as grassespoaceae includes the cereal grasses, bamboos and the grasses of natural. Agriculture / university of baghdad five maize (zea mays l) inbred lines were tested for general and specific combining ability by using full diallel cross seed of inbred were planted in spring and fall season of 2013 in first season, seeds were planted, and at anthesis crossing between inbreds were done. The yields of maize hybrid denghai 605 (dh605) in treatments v3-3, v3-6, v6-3, v6-6, 10vt-3, and 10vt-6 were 23, 32, 20, 24, 8, and 18% lower than those of the control (ck), respectively yields of zhengdan 958 (zd958) were lower by 21, 35, 15, 33, 7, and 12%, respectively waterlogging also affected the growth and development of summer maize. Top cross analysis of maize (zea mays l) inbred lines for some agronomic traits in central rift valley of ethiopia anthesis to silkikng interval.
Drought causes significant delay in silking , preventing the critical synchrony between silking and anthesis and resulting in maize yield reduction [30, 43] this observation explains why the anthesis-silking interval (asi) has been reduced in modern maize hybrids , and short asi has been the focus of breeding programs aimed at developing. Anthesis is the period during which a flower is fully open and functional it may also refer to the onset of that period the onset of anthesis is spectacular in some species. Review article maize agronomic traits needed in tropical zone earliness refers to anthesis maize agronomic traits needed in tropical zone 373. Maize (zea mays l), drought stress, anthesis-silking interval, breeding 1 introduction maize (zea mays l) along with wheat and rice provides at least 30% of the.
Experiments conducted by cimmyt demonstrated that maize varieties such as katumani composite escape drought and have a long anthesis to silking interval (asi) asi which is defined as the duration between male and female flowering in maize, has been used successfully to select drought tolerant maize.
Anthesis and silking dynamics of maize under contrasting nitrogen and water levels md samim hossain molla1, 2, sutkhet nakasathien2,, ed sarobol2 and. Identification of quantitative trait loci for resistance to southern leaf blight and days to anthesis in a maize recombinant inbred line population balint-kurti. Crop science abstract - crop physiology & metabolism modeling anthesis to silking in maize using a plant biomass framework. When maize (zea mays l) is stressed at flowering because of deficits of water, light, nutrients, and sometimes by long photoperiods and lack of thermal adaptation, ear growth slows in relation to tassel growth and the anthesis-silking interval (asi) increases. Maize weber and bleiholder, 1990 lancashire et al, 1991 phenological growth stages and bbch-identification keys of maize code description principal growth stage 6: flowering, anthesis. Citation: edmeades, go 2013progress in achieving and delivering drought tolerance in maize - an update, isaaa: ithaca, ny. Adaptation of maize to climate change impacts in iran changing maize anthesis period had a positive effect on adaptation of maize to climate change in this.
Crop science abstract - crop ecology, management & quality mineral composition of the grains of tropical maize varieties as affected by pre-anthesis drought and rate of nitrogen fertilization. Drought stress in maize (zea mays l) pollen and silk development, anthesis silking interval, pollination, and embryo, endosperm and kernel development.