ISSN:
1432-2137
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mathematics
Notes:
Zea mays L.) using a technique that allows a rapid and noninvasive capacitance reading. The capacitance meter measured root capacitance of maize grown under greenhouse (8 genotypes) and field (6 genotypes) conditions. After the capacitance readings, 14 plants per genotype were uprooted, roots were washed thoroughly, and root fresh mass was obtained. The statistical relationship between capacitance and root fresh mass in experiments was significant early in the growth season for all genotypes (r2 = 0.73, P ^lt; 0.001), and significant only late in the growth season for inbreds (r2 = 0.56, P 〈 0.001). Field studies showed that capacitance and root fresh mass were statistically correlated for all genotypes at flowering (r2 = 0.69, P 〈 0.001). In conclusion, capacitance meters equipped with a clamp for rapid attachment to the plant may facilitate the nondestructive identification of genotypes with root characteristics that confer adaptation to various environments. Conditions for accurate capacitance measurements included a moist medium around the plant's root system and a consistent placement of the electrode at 6 cm above the crown.
Type of Medium:
Electronic Resource
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