scholarly journals Transcriptome Comparison of Global Distinctive Features Between Pollination and Parthenocarpic Fruit Set Reveals Transcriptional Phytohormone Cross-Talk in Cucumber (Cucumis sativus L.)

2014 ◽  
Vol 55 (7) ◽  
pp. 1325-1342 ◽  
Author(s):  
J. Li ◽  
Z. Wu ◽  
L. Cui ◽  
T. Zhang ◽  
Q. Guo ◽  
...  
1972 ◽  
Vol 52 (5) ◽  
pp. 781-785 ◽  
Author(s):  
D. J. CANTLIFFE

Nine growth-regulating chemicals were sprayed at concentrations of 50 and 100 ppm on pickling cucumbers (Cucumis sativus L., cult Pioneer) in an effort to induce parthenocarpic fruit development. A morphactin formulation, IT 3456 (methyl-2-chloro-9-hydroxyfluorene-(9)-carboxylate), and TIBA (2,3,5-triiodobenzoic acid) were the most effective in stimulating parthenocarpic fruit-set and development at both concentrations used. Between six and seven fruits per plant were induced parthenocarpically when 100 ppm IT 3456 morphactin was used. Two other morphactins tested, IT 3233 (n-butyl-9-hydroxyfluorene-(9)-carboxylate) and Bay 102614 (2,7-dichloro-9-hydroxyfluorene-carboxylate-(9)-methyl ester), produced no more fruits than the control. A new growth regulator, CCDP (3-carboxy-1-(p-chlorophenyl)-4,6-dimethyl-2-pridone), significantly increased the number of fruits per plant at the 100-ppm concentration, and also increased the number of female flowers per plant produced within 50 days of planting, at both concentrations. The other four compounds tested, designated EL 531 (α-cycloprophyl-α-(4-methoxyphenyl)-5-pyrimidine methanol), BAS 0660-W (N-dimethyl-morpholiniumchloride), TD 692 (mono-("coco" dimethylamine) succinate), and Chemagro 8728 (5-chloro-2-thenyl-tributylphosphonium), were not effective inducers of parthenocarpy in the cucumber.


BMC Genomics ◽  
2017 ◽  
Vol 18 (1) ◽  
Author(s):  
Ji Li ◽  
Jian Xu ◽  
Qin-Wei Guo ◽  
Zhe Wu ◽  
Ting Zhang ◽  
...  

2003 ◽  
Vol 60 (4) ◽  
pp. 643-649 ◽  
Author(s):  
Inês Cristina de Batista Fonseca ◽  
Antonio Evaldo Klar ◽  
Rumy Goto ◽  
Carmen Silvia Vieira Janeiro Neves

Cucumber (Cucumis sativus L.) is one of the most cultivated vegetable crops in plastic greenhouses in Brazil because of the short cycle and its high economic value in off-season harvests. To better understand this management technique the effect of different colored polyethylene soil covers was evaluated in relation to flowering and yield of the hybrid cucumber 'Yoshinari' grafted or not on the hybrid squash 'Ikky'. The polyethylene cover colors were black, white on black and green plus a control without cover. Covered but not grafted crops had a more uniform flowering distribution. The number of flowers was greater for the white/black grafted treatment. All the polyethylene covers favored flowering for the non grafted plants. Grafting reduced flowering for the black or green polyethylene covers treatments. The fruit set increased with the use of polyethylene cover but was not influenced by grafting. The uniform distribution of flowering remained during fruiting only for grafted plants and soil covered with black or green polyethylene. Both polyethylene cover and grafting favored early harvesting. The 'Yoshinari'/'Ikky' graft caused taller plants but fruit were thicker and smaller and did not meet the commercial standard. The best quality fruit and highest yields were obtained in the black and white/black treatments, without grafting.


2015 ◽  
Vol 5 (2) ◽  
pp. 104
Author(s):  
Ekowati Nursiam Harliani ◽  
Endah Retno Palupi ◽  
Dudin Supti Wahyudin

<p>ABSTRACT</p><p>High pollen viability with adequate quantity determine yield of hybrid seed production. Stored pollen with high viability is expected to produce high quantity and quality of hybrid seed.  The aims of  this  research  was  to  study  the possibility  of  using  stored  pollen  in  hybrid  seed  production  of cucumber (Cucumis  sativus  L.).  The  research  was  conducted  in  Pollen  Laboratory, screen  house (SH),  and  experimental  station  of  PT.  East  West  Seed Indonesia,  Gumuk  Segawe  village,  Ajung subdistrict,  Jember,  East  Java from  March  until  August  2011.  The  research  was  started  with observation on the timing of receptive stigma based on color changes of petal and stigmatic surface every hour during which time pollination was also conducted. Percentage of fruit set and seed set from each pollination were observed. The research  was then continued with experiments conductedin the field and SH separately. The experiment was arranged in completely randomized block design with 10 treatments in the field and 13 treatments in SH. The treatments for field experiment were combination  of  storage  period  (0,  20,  30  and  40  DAS) and  pollination  technique  (1,  2,  3  times swabbing). The storage period  for SH experiment were 0, 7, 14 and 28 DAS. The treatments were repeated  3 times.  The  result  showed  that  the  stigma  was  receptive  during  07.00-13.00  h.  The viability of stored pollen 20-40 DAS ranged between 0.8-4% whereas 7-28 DAS ranged between 4.8-9.71%. Fruit set from stored pollen ranged 21.23-42.42% and seed set ranged 16.89-25.26% in the field compared to use of fresh pollen 54.64 and 59.26% respectively. As for SH the fruit set ranged 30.69-63.98% and seed set ranged 18.22-35.68% from stored pollen compared 73.56% and 80.69% from  fresh  pollen.  Reproductive  succes  of stored  pollen  in  the  field  ranged  12.82-29.29%  with averaged  of  19.89% compared  to  that  of  fresh  pollen,  whereas  in  the  SH  used  of  stored pollen resulted in 10.60-25.29%, averaged 18.89% reproductive succes.</p><p>Key words: empty seed, pollen viability, seed set, seed quality, stigma receptivity</p><p> </p><p>ABSTRAK</p><p>Viabilitas serbuk sari yang tinggi dan jumlah serbuk sari yang memadai menentukan produksi benih  hibrida  mentimun.  Serbuk  sari  yang  telah  disimpan  dan  mempunyai  viabilitas  yang  tinggi diharapkan dapat digunakan dalam produksi benih hibrida dengan mutu yang tinggi.  Oleh sebab itu penelitian  ini  bertujuan  untuk  mempelajari  kemungkinan  pemanfaatan serbuk  sari  yang  telah disimpan dalam produksi benih hibrida mentimun (Cucumis sativus  L.). Penelitian ini dilakukan di Laboratorium Serbuk Sari, screen house  (SH) dan lahan percobaan Production Farm PT. East West Seed Indonesia, Desa Gumuk Segawe, Kecamatan Ajung, Kabupaten Jember, Jawa Timur dari bulan Maret  hingga  Agustus  2011.  Penelitian  ini  diawali  dengan penentuan  masa  reseptif  stigma  yang diamati  berdasarkan  perubahan warna  mahkota  dan  permukaan  stigma  setiap  jam,  dan  pada  saat yang sama  stigma  diserbuk.  Pengamatan  dilakukan  terhadap  pembentukan buah dan  benih. Penelitian  dilanjutkan  dengan  pemanfaatan  serbuk  sari  yang telah  disimpan  untuk  produksi  benih hibrida mentimun di lapang dan SH secara terpisah pada waktu yang berbeda. Rancangan penelitian yang digunakan RKLT dengan 10 perlakuan (percobaan di lapang) dan 13 perlakuan (percobaan di SH), perlakuan yaitu kombinasi antara lama simpan serbuk sari dan teknik penyerbukan. Perlakuan pada  percobaan  di  lapang  adalah  kombinasi  lama simpan (0,  20,  30  dan  40  HSS)  dan  teknik penyerbukan (1, 2 dan 3 kali usapan kuas), sementara serbuk sari untuk percobaan di SH (0, 7, 14, 21, dan 28 HSS). Masing-masing kombinasi perlakuan diulang sebanyak 3 kali. Hasil pengamatan menunjukkan bahwa masa reseptif stigma tanaman betina mentimun varietas KE014 terjadi antara pukul 07.00-13.00. Serbuk sari yang telah disimpan antara 20-40 HSS mempunyai viabilitas sekitar antara 0.80-4.05%, sementara 7-28 HSS sekitar 4.86-9.71%. Pembentukan buah dan benih di lapang masing-masing  berkisar  21.23-42.42% dan  16.89-25.26% dibandingkan  dengan  menggunakan serbuk sari segar sebesar 54. 64% dan 59.26 %. Pembentukan buah dan benih pada penelitian di SH masing-masing berkisar  30.69-63.98%  dan  18.22-35.68%  dibandingkan  dengan menggunakan serbuk sari segar sebesar 73.56% dan 80.69%. Keberhasilan reproduksi dari penggunaan serbuk sari yang telah disimpan pada penelitian di lapangan berkisar 12.82-29.29% dari kontrol dengan rata-rata sebesar  19.89%. Potensi  keberhasilan  reproduksi  di  SH  sebesar  10.60-25.29%  dengan  rata-rata sebesar 18.89%.</p><p>Kata kunci: benih hampa, mutu benih, pembentukan benih, reseptif stigma, viabilitas serbuk sari</p>


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