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Hybrid millet Zhang
and its parental cultivars were studied for their potassium (K) uptake and
accumulation characteristics and related physiological
mechanisms. Hydroponic culture was performed with two K levels (i.e., high and low) set up. At high K
level, hybrid millet showed heterobeltiosis in K accumulation and leaf K
content, and it also had higher H+-ATPase activity, respiration rate,
root oxidant activity and root K+ influx rate than its parental cultivars. All these lay the physiological
foundation of heterosis for potassium uptake of hybrid millet. At low K level,
the hybrid millet had a lower H+-ATPase activity and a higher K
efflux rate than its parental cultivars, thus heterobeltiosis in K accumulation
or leaf K content was not observed. Therefore, high level K fertilizer application
is recommended for hybrid millet cultivation as it is favorable for hybrid
millet to display heterosis in K uptake and K accumulation.
This paper mainly describes the experiences of clinical application of Dachaihu Decoction in treating chronic pelvic infection, coronary heart disease, insomnia, and hepatolithiasis.