Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
$ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady ertation£ < 2ẳ ^(CancapapayaStudies on asexual propagation techniques of papaya (Carica papaya L.) cv. ‘Tainung No.2' and ‘Red Lady’4h Advisors: M H (Chung-Ruey Yen. Ph.D.) iặdr (Ching-ĩĩsiang ĩĩsich, Ph.D.)Student:(Nguyen Van ĩĩong)+1071030 a43403INTRODUCTIONThe cultivated papaya (Carica papaya L.) Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady is the most economic important species in the family Caricaceae. Papaya grows year-round, is an elongated berry of various sizes with a smooth thin sNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
kin and a greenish-yellow color (Pauli 2011). Its flesh is thick with a color ranging from yellow to red and oilers a pleasant, sweet, mellow flavor ($ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady veral proteins, and the industrially important enzyme papain (Barret 1985, Bose 1990. HI Moussaoui 2001). Papaya fruit is low in sodium, fat. and calories, and contain no starch (Sampson 1986 ). Papain, whose proteolytic action is similar to that of pepsin and trypsin, is employed as a meat tcndcriz Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady cr in applications in the food industry. as well as in the textile, pharmaceutical, and cosmetic industries (Villegas 1997, Su 2009).Papaya is one ofNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
the most economically important fruit crops in many-tropical and subtropical countries. In 2016, total areas for fruit cultivation were 441.964 ha in $ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady papaya area harvested and production were 2.500 ha and 115.115 tonnes (Faostat 2017). Recently, the papaya production is affected by destructive diseases, specially, papaya ringspot (PRS). PRS is one the most destructive diseases of papaya and occurs in every region where papaya is grown. It has be Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady en reported to be a major limiting factor for commercial papaya production particularly in Hawaii, areas of Thailand. Taiwan, India. Mexico. BangladesNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
h, the Philippines, and the southern region of China (Chang 2003. Jayaval I i 2011).Papaya is a polygamous species with many forms of inflorescences. $ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady propagated by seed for commercial production. Papaya seedlings propagated from seed is hindered by problems because of the sex reversal, inherent heterozygosity and dioecious nature of the crop (Teixeira 2007, Clarindo 2008). In the commercial plantations of most producing countries, male plants are Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady useless and only hermaphrodite individuals are agreed by growers (Usman 2002. Hsu 2012). However, it was found that undesirable male plants prevail aNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
s high as 30% and sometimes over 50 % of trees planted in papaya fields (Jordan 1983). So. in actual commercial production, three or four seedlings ar$ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady s. In addition, the plants grown from seeds show considerable variations in disease susceptibility, fruit quality, and yield (Reuveni 1990. Allan 1995. Teixeira 2007).The main advantage of vegetative propagation is the certainty of keeping the characteristics of the mother plant (Hartmann 2002. Hart Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady mann 2011). Il had been reported the possibility of developing materials highly productive and resistant to diseases, which can be spread safely keepiNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
ng intact the characteristics of the papaya mother plants through asexual propagation (San Jose 1988). Additionally, one can reduce transmissible dise$ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady e preferred to round fruits of female plants as they fetch premium price in the market (Reuveni 1990, Teixeira 2009). Up to now. asexual propagation techniques, such as rooting of cuttings, grafting and micropropagation have been successful in papaya cultivars (Airi 1986 , Ramkhelawan 1998 , Teixeừa Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady 2007. Chong 2008 , Wu 2012. Setargie 2015).The success of assexual propagation by cutting, grafting, tissue culture depends on numerous factors, amonNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
g them the zone environment, the material and technique application, and the genotype (Hartmann 2002. Soundy 2008. Hartmann 2011. Mabizela 2017). In a$ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady r certain conditions.In Taiwan, the papaya is mainly propagated by seed and by a method designed to reduce damage from viruses of insects. To date, there is hardly any information on cuttings, grafting and tissue culture propagation of the hybrid papaya cultivars ‘Tainting No.2’ and ’Red Lady’. The Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady ‘Tainung No.2’ papaya is the major cultivar with 90% of growing area and ‘Red Lady’ papaya is potentially one for spreading with fruit weigh of 1.5-2Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
kg. good fruit quality (flesh is thick, red. with 13% sugar content, and aromatic) and preferred by the local market (Agriculture and Hood Agency, Cou$ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady paya varieties (‘Tainung No.2’ and ‘Red Lady’) by grafting, cutting and tissue culture. The aims of this study were to investigate the effects of grafting, cutting and micropropagation techniques on commercial asexual propagation in 'Tainung No.2’ and 'Red Lady’ papaya. The specific objectives were: Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady •Research on grafting propagation of ‘Tainung No.2’ and ‘Red 1 .ady’ papaya.•Research on cutting propagation of‘Tainung No.2’ and ‘Red Lady’ papaya.•RNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
esearch on tissue culture propagation of *Tainung No.2’ and ‘Red I .ady’ papaya.LITERATURE REVIEW1. General of papaya plantPapaya (Caricapapaya L.) is$ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady ously at the leaf axils spirally arranged along the single erect trunk. The papayas have common names, such as papaya, papaw or pawpaw, papaycr (fricnch), meloncnbaum (German), lechosa (Spanish), mamao (Portuguese), mugua (Chinese), and dudu (Vietnamese) (Pauli 2011).1.1.TaxonomyCarica Papaya L., is Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady the most important economic fruit, belongs to the Carica Genus, Caricaceae family. Caricaceae is a small family of dicotyledonous plant with five genNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
era of tropical American origin (('atica, Jarilla, Jacaratia, Horovitzia and Vasconcella) and one from equatorial Africa (Cylicomorpha) (Pauli 2011). $ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady species, and Cylicomorpha, 2 species.Carica and VasconceUa species are dioecious, except for the monoecious Vasconcella monoica (l)esf.) and some Vasconcella pubescens and the polygamous papaya. Most species arc herbaceous, single-stemmed and erect (Pauli 2011).1.2.Origin, distribution and productio Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady nUpto now. scientist has not found Carica papaya wild in nature. It is evidenced in distantly relation to the VasconceUa species by isozyme and AFLP aNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
nalysis (Pauli 2011). It is believed that Carica papaya is native to tropical America. Its origin region is southern Mexico and neighbouring Central A$ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady had been taken from the Caribbean to Malacca and on to India ( Pauli 2011). Subsequent historical records indicate that from Malacca or Philippines the papaya distribution continued throughout Asia and to the South Pacific region. The factors such as a large number of the seeds in the fruit and thei Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady r long viability have contributed to the wide geographical distribution of the fruit (Pauli 201 1).In the past decade, papaya has attained great populNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
arity because it can be intensively cultivated, its rapid returns and the increased demand for the fresh fruit as well as its processed products. Papa$ i. £ £mX*&< t ® h Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and TechnologyPh.D. Disse Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady f the world. From 2006 to 2016. Papaya area harvested and production had been developing quickly in the world (Figure (Fig.) 1). The highest papaya production was obtained in Asia (49%) followed by Americas (37.7%) and by Africa (13.2%). The lowest production (0.2%) is recorded Oceania (Fig.2). Top Nghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady ten countries of papaya production (2006-2016) are India. Brazil. Indonesia. Negeria. Mexico. Dominican Republic, Democratic Republic of the Congo. KeNghiên cứu kỹ thuật nhân giống vô tính cây đu đủ carica papaya l cv tainung no 2 and red lady
nya. Thailand. Colombia. Philippines (Fig.3) (Faoslal 2017).YearsGọi ngay
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