Papaya ring spot virus

Several investigators studied the effectiveness of chemical resistance inducers against root rot disease (Segarra et al., 2006) and hence this study was aimed to study the effect of chemically induced resistance in the management of PRSV in papaya.

10p chauchaungayxua11 23-03-2021 12 2   Download

Nội dung bài viết điều tra, đánh giá khả năng kháng, nhiễm các bệnh hại, bao gồm bệnh phấn trắng (Powdery mildew), sương mai (Downy mildew), vi rút đốm vòng đu đủ (Papaya Ring Spot Virus), vi rút khảm vàng (Zcchini Yellow Mosaic Virus) trên đồng ruộng vụ Đông Xuân năm 2015 - 2016 tại An Khánh, Hoài Đức, Hà Nội. Kết quả phát hiện 2 bệnh nhiễm trên tập đoàn bí đỏ là bệnh phấn trắng và bệnh vi rút đốm vòng đu đủ. Mời các bạn tham khảo!

0p gaocaolon8 21-11-2020 39 0   Download

During survey from March 2014 to October 2015, in Barasat, West Bengal, India, incidence of symptoms suggestive of virus infection was observed in Coccinia grandis. Infected plants were showing typical symptoms including leaf curling, crinkled leaves, leaf yellowing and stunted growth. Symptomatic plant samples were tested for the presence of potyvirus and geminivirus.

8p chauchaungayxua8 03-10-2020 14 1   Download

There have been numerous attempts to transfer Papaya ringspot virus type P (PRSV-P) resistance from wild Vasconcellea relatives to Carica papaya L. Success has been limited by the high degree of genetic divergence and incompatibility. In the present work, the advanced intergeneric population of Carica papaya (var. Arka Surya) and Vasconcellea cauliflora were evaluated for morphological, fruit traits and PRSV- P tolerance.

10p trinhthamhodang7 31-08-2020 10 1   Download

Papaya (Carica papaya. L), gained momentum as a commercially and industrially important fruit crop in India. The demand for the fruits in the market is steadily increasing due to the awareness among public about its health benefits. India, though the world‟s largest producer of papaya, its cultivation is challenged by various factors such as Papaya Ring Spot Virus, Papaya mealy bug, root rot incidence, variations in seed propagation, malformation of fruits and lack of fruit set due to weather fluctuations, poor shelf life of fruits etc.

10p caygaocaolon6 30-07-2020 6 1   Download

Papaya is major tropical fruit gaining importance throughout the tropics and subtropics but there is a severe restriction in its production due to the serious disease known as Papaya Ring Spot Virus (PRSV-P). No papaya variety till date was identified as having durable resistance to PRSV-P; whereas several species of Vasconcellea, a close relative of papaya was reported to have heritable resistance to Papaya Ring Spot Virus.

7p kethamoi5 03-06-2020 12 0   Download

Papaya is an economical fruit crop in Kadapa district of AP and Kodur region is a traditional belt for cultivation from early 1990’s. The cultivation was with dioecious varieties initially and as the time progressed gynodioecious varieties (Taiwan Red lady) were introduced in the Indian market. In Kodur region, the crop directly or indirectly improved the livelihoods of farmers, fruit traders, processing industries, news paper vendors, hoteliers, transporters.

5p caygaocaolon3 27-02-2020 16 1   Download

Intergeneric hybridization was carried out to know the cross compatibility between papaya varieties (Arka Prabhath, Arka Surya and Red Lady) with Vasconcellea species (V. cauliflora, V. cundinamarcensis and V. parviflora). Arka Prabhath was found to be a good combiner with all the three wild species (V. cauliflora, V. cundinamarcensis and V. parviflora) which has recorded good fruit set (85.42, 78.13 and 84.38 % respectively), fruit retention (98.96, 83.33 and 73.96 % respectively) and more mean number of fertile seeds per fruit (63.99, 70.82 and 28.14 respectively).

24p kethamoi2 15-12-2019 13 2   Download

The present investigation were undertaken to evaluate the intergeneric population of Carica papaya (Arka Surya) and Vasconcellea cauliflora for PRSV tolerance. The morphological traits viz., plant height at flowering (60 to 172 cm), plant height at first harvest (127 to 194 cm), stem circumference at flowering (14 to 30cm), stem circumference at first harvest (26.

13p cothumenhmong1 10-12-2019 12 1   Download

Papaya ring spot virus (PRSV) is the most destructive disease of Papaya, responsible for yield reduction of Papaya all over the world. PRSV exhibited different types of symptoms on Papaya plant in the field like ringspot , vein clearing, vein banding, chlorosis of younger leaves, filiformy, shoestring, mosaic, mottling, stunted growth etc. Molecular diagnosis of PRSV was done with the help of gene specific primers through PCR. Gel electrophoresis results show a 300bp clear band which confirms the presence of PRSV in the plants. Sequencing was done and phylogenetic tree was made.

8p cothumenhmong1 08-12-2019 16 0   Download

Năm mươi mẫu giống dưa chuột đang lưu giữ tại Ngân hàng gen cây trồng Quốc gia được sử dụng để đánh giá bốn bệnh hại là phấn trắng (Powdery mildew), sương mai (Downy mildew), virut đốm vòng đu đủ (Papaya Ring Spot Virus), virut khảm vàng (Zucchini Yellow Mosaic Virus) trên đồng ruộng tại An Khánh, Hoài Đức, Hà Nội.

6p vieeinstein2711 30-07-2019 21 1   Download

Năm mươi mẫu giống bí đỏ thuộc loài Cucurbita moschata, đang lưu giữ tại Ngân hàng gen cây trồng Quốc gia được sử dụng để đánh giá bốn bệnh hại là phấn trắng (Powdery mildew), sương mai (Downy mildew), vi rút đốm vòng đu đủ (Papaya ring spot virus), vi rút khảm vàng (Zucchini yellow mosaic virus) trên đồng ruộng tại An Khánh, Hoài Đức, Hà Nội.

6p vieeinstein2711 30-07-2019 44 1   Download

Trong nghiên cứu này, diễn biến của bệnh phấn trắng (Powdery mildew) và bệnh vi rút đốm vòng đu đủ (Papaya ring spot virus) trên 50 mẫu giống của tập đoàn dưa chuột được theo dõi và đánh giá trên đồng ruộng tại An Khánh, Hoài Đức, Hà Nội năm 2015.

5p vieeinstein2711 30-07-2019 37 0   Download