Effect of a forchlorfenuron dip on kiwifruit fruit size

Abstract

All the fruit from kiwifruit vines (Actinidia deliciosa (A.Chev.) CF. Liang et A.R. Ferguson cv.Hayward) were dipped in 10 mgllitre solutions of forchlorfenuron (N-(2-chloro-4-pyridyl)-Nphenylurea) 35 and 36 days after full bloom at two sites in the 1989/90 season and 22 days after full bloom at one site in 1990/91. Growth curves showed that treated fruit grew 30--60% faster than untreated fruit, both during the rapid cell division and expansion phase (fmt 53-74 days after full bloom), and during the subsequent slower cell expansion phase through to harvest. The mean harvest weight of export quality fruit from forchlorfenuron treated vines was increased by 27-46% (average weight for three sites 143 g) compared to untreated fruit (107 g). Forchlorfenuron treatments did not influence overall rejection rates. Forchlorfenuron treatments appeared to increase some fruit shape defects but that was compensated by a H91077 Received 24 September 1991; accepted 7 February 1992 reduction in pollination and blemish defects. At harvest, forchlorfenuron treated fruit had lower total soluble solids and flesh ftrmness than untreated fruit.

A precisely targeted application strategy of dipping young cucumber fruit in fungicide to control cucumber gray mold

“…At present, dipping fruit in PGRs to increase crop yield has been reported for cucumber, tomato and kiwi fruit in many countries, such as Japan, New Zealand and China . However, to our knowledge, the current study is the first to investigate the combination of fungicides and PGRs in dipping fruit application for the control of cucumber gray mold.…”

“…32 At present, dipping fruit in PGRs to increase crop yield has been reported for cucumber, tomato and kiwi fruit in many countries, such as Japan, New Zealand and China. 18,23,33 However, to our knowledge, the current study is the first to investigate the combination of fungicides and PGRs in dipping fruit application for the control of cucumber gray mold. Our study revealed that dipping fruit in fludioxonil and forchlorfenuron (PGR) is a cost effective practice and has no negative consequences on the environment or human health.…”

Nondestructive detection of kiwifruit treated with N ‐(2‐chloro‐4‐pyridyl)‐ N ′‐phenylurea by electrical method

“…N ‐(2‐chloro‐4‐pyridyl)‐ N ′‐phenylurea (CPPU), a synthetic cytokine (Jáuregui‐Riquelme, Kremer‐Morales, Alcalde, & Pérez‐Donoso, 2017) that promotes cell division and seed germination, is applied to a variety of fruits, such as apple (Matsumoto, Fujita, & Sato, 2018), grape (Jáuregui‐Riquelme et al, 2017), mango (Pujari, Malshe, Shedge, Zagade, & Lawande, 2016), and blueberry (Retamales, Lobos, Romero, Godoy, & Moggia, 2014), and vegetables to increase their volume and yield. CPPU was initially used in the production of kiwifruit in the 1990s, and this treatment improved the fruit yields and brought about great economic benefits (Blank et al., 1992). However, excessive use of CPPU led to reductions in nutrition, rapid softening, and rotting of the fruit during postharvest storage because that the cytokine accelerated the decomposition of pectin and cellulose of cell wall (Cooper, González, & Retamales, 2007; Kim et al., 2006).…”

“…CPPU was initially used in the production of kiwifruit in the 1990s, and this treatment improved the fruit yields and brought about great economic benefits (Blank et al, 1992). However, excessive use of CPPU led to reductions in nutrition, rapid softening, and rotting of the fruit during postharvest storage because that the cytokine accelerated the decomposition of pectin and cellulose of cell wall (Cooper, González, & Retamales, 2007;Kim et al, 2006).…”

Transformation products elucidation of forchlorfenuron in postharvest kiwifruit by time-of-flight mass spectrometry

“…FCF is a plant growth regulator, being extensively used for increasing fruit size and weight in watermelon, kiwifruit, grape and apple[ 1 – 4 ]. In China, the incidence of FCF had caused an adverse impact on the kiwifruit industry.…”