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S.V. Krishna Jagadish
Kansas State University
CropSorghumBotanyAgronomyBiology
40Publications
9H-index
267Citations
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Publications 49
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#1S.V. Krishna Jagadish (KSU: Kansas State University)H-Index: 9
Heat stress during flowering has differential impact on male and female reproductive organ viability leading to yield losses in field crops. Unlike flooded rice, dryland cereals such as sorghum, pearl millet and wheat have optimised their flower opening during cooler early morning or late evening hours to lower heat stress damage during flowering. Although previous studies have concluded that pollen viability determines seed set under heat stress, recent findings have revealed pearl millet and s...
1 CitationsSource
#1Stephanie Schaarschmidt (MPG: Max Planck Society)H-Index: 1
#2Lovely Mae F. Lawas (MPG: Max Planck Society)H-Index: 4
Last. Ellen Zuther (MPG: Max Planck Society)H-Index: 27
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Rice (Oryza sativa) is the main food source for more than 3.5 billion people in the world. Global climate change is having a strong negative effect on rice production. One of the climatic factors impacting rice yield is asymmetric warming, i.e., the stronger increase in nighttime as compared to daytime temperatures. Little is known of the metabolic responses of rice to high night temperature (HNT) in the field. Eight rice cultivars with contrasting HNT sensitivity were grown in the field during ...
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#1Raju Bheemanahalli (KSU: Kansas State University)H-Index: 5
#2S.M. Impa (KSU: Kansas State University)H-Index: 11
Last. S.V. Krishna Jagadish (KSU: Kansas State University)H-Index: 9
view all 7 authors...
Unravelling the metabolic and phytohormonal changes in anthers exposed to heat stress would help identify mechanisms regulating heat stress tolerance during the sensitive reproductive stage. Two spring wheat genotypes contrasting for heat tolerance were exposed to heat stress during heading in controlled environment chambers. Anthers were collected from main and primary spikes for metabolic and phytohormonal profiling. A significant reduction in seed set (38%), grain number (54%) and grain weigh...
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#1Sudhir Yadav (IRRI: International Rice Research Institute)H-Index: 2
#2Manoranjan K Mondal (IRRI: International Rice Research Institute)H-Index: 2
Last. Parvesh Chandna (IRRI: International Rice Research Institute)H-Index: 2
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Most of the lands of the southern coastal zone of Bangladesh are protected from tidal flooding and storm surges by embankments constructed during the 1960s and 1970s, creating polders. Sluice gates in the embankments connect the canals (former river distributaries) inside the polders to the surrounding rivers, providing the opportunity for water intake from, or drainage to the rivers by judicious management of the gates. Yet, unlike northern and central Bangladesh, the polders have not benefited...
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#1Walid Sadok (UMN: University of Minnesota)H-Index: 13
#2S.V. Krishna Jagadish (KSU: Kansas State University)H-Index: 9
Nighttime warming poses a threat to global food security as it is driving yield declines worldwide, but our understanding of the physiological basis of this phenomenon remains very limited. Furthermore, it is often assumed that such declines are driven solely by increases in nighttime temperature (TNight). Here we argue that, in addition to temperature, increases in nighttime evaporative demand may ‘conspire’ to penalize yields and end-use quality traits. We propose an ecophysiological framework...
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#1Anuj Chiluwal (KSU: Kansas State University)H-Index: 2
#2Raju Bheemanahalli (KSU: Kansas State University)H-Index: 5
Last. S.V. Krishna Jagadish (KSU: Kansas State University)H-Index: 9
view all 8 authors...
In sorghum (Sorghum bicolor [L.] Moench), the impact of heat stress during flowering on seed set is known, but mechanisms that lead to tolerance are not known. A diverse set of sorghum genotypes was tested under controlled environment and field conditions to ascertain the impact of heat stress on time-of-day of flowering, pollen viability, and ovarian tissue. A highly conserved early morning flowering was observed, wherein >90% of spikelets completed flowering within 30 min after dawn, both in i...
2 CitationsSource
#1S.M. Impa (KSU: Kansas State University)H-Index: 11
#1Somayanda M. Impa (KSU: Kansas State University)H-Index: 2
Last. S.V. Krishna Jagadish (KSU: Kansas State University)H-Index: 9
view all 7 authors...
Unlike sporadic daytime heat spikes, a consistent increase in night-time temperatures can potentially derail the genetic gains being achieved. Ten winter wheat genotypes were exposed to six different night-time temperatures (15-27 degrees C) during flowering and grain-filling stages in controlled environment chambers. We identified the night-time temperature of 23(o) C as the critical threshold beyond which a consistent decline in yields and quality was observed. Confocal laser scanning microgra...
1 CitationsSource
#1Onoriode Coast (University of Reading)
#1Onoriode Coast (Rice University)
Last. S.V. Krishna JagadishH-Index: 9
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#1Nathan T. Hein (KSU: Kansas State University)
#2Dan Wagner (KSU: Kansas State University)
Last. S.V. Krishna Jagadish (KSU: Kansas State University)H-Index: 9
view all 8 authors...
Many agronomic traits have been bred into modern wheat varieties, but wheat (Triticum aestivum L.) continues to be vulnerable to heat stress, with high night-time temperature (HNT) stress shown to have large negative impact on yield and quality. Global mean temperature during the day is consistently warming with the minimum night temperature increasing at a much quicker pace. Currently, there is no system or method that allows crop scientists to impose HNT stress at key developmental stages on w...
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