Effects of Repeated N-(2-Chloro-4-Pyridyl)-N'-Phenylurea Application on Growth and Development of Asparagus officinalis L.
2007
Ku, Y.G. (Chonnam National University, Gwangju, Republic of Korea), E-mail: [email protected] | Woolley, David (Massey University, Palmerston North, New Zealand) | Nichols, Michael (Massey University, Palmerston North, New Zealand)
Effects of repeated application of N-(2-chloro-4-pyridyl)-N'-phenylurea (CPPU) to foliage of asparagus seedlings on cladophyll morphology using growth analysis were investigated. Seven-week-old asparagus seedlings cvs. 'Jersey Giant' and 'UC 157' were sprayed to run off with CPPU at 10 mgㆍL-¹. Untreated seedlings were sprayed with tap water. The application of CPPU or tap water were repeated after 4, 8, and 12 weeks. Repeated CPPU foliar sprays significantly increased cladophyll area and cladophyll dry weight, but decreased root dry matter and the number of buds. Despite the higher cladophyll area, CPPU did not increase photosynthetic efficiency as measured by relative growth rate and net assimilation rate. 'UC 157' produced more bud numbers than 'Jersey Giant,' but root dry weight did not differ between the two cultivars. 'UC 157' and 'Jersey Giant' had similar relative growth rates and net assimilation rates.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Korea Agricultural Science Digital Library