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KET QUA TAO GIONG HOA LAY ON CHAT Ll/ONG CAO VA KHONG BIKHO DAU LA BANG LAI H tfU TINH Nguyen Thi Hong Nhung1, Biii Hu Hong Nhuy1, Bui Thi Hong1, Dang Van Dong1 TOM TAT Hoa lay On (Gladiolus sp.) la loai cay sinh san hflu tinh nhung diipc nhan giong bang phUdng phap vo tinh Giai doan 2015 - 2020, Vien Nghien alu Rau qua tien hanh tao giong lay On bang lai hflu tinh til nguon vat lieu gom 25 giong lay On dope thu thap niiPc va nhap noi Ket qua da tao dupe giong lay On mPi, GL2-20 co hoa mau do/vang, GL2-21 hoa mau hong, GL2-22 hoa mau hong cam; hoa dep, co tii 15 -17 hoa/canh, ti le hoa cho thu hoach dat tU 90,7 - 93,8%; cay sinh trUdng tot, it bi benh kho dau la Tit khoa: Hoa lay On, dong lai, giong mPi, lai hQu tinh, khao nghiem I DAT VAN DE Lay on (Gladiolus sp.) thuoc nhom hoa co cu quan trong, la loai hoa cat dupe Ua chuong tren the gidi va Viet Nam bdi kieu dang va mau sac hoa da dang Nam 2017, gia tri xuat khau cu giong hoa lay On th Ha Lan dat khoang 34,4 trieu euro (Statista, 2019) O Viet Nam, hoa lay On rat dupe Ua chuong (san lupng chi ddng sau hoa cue va hoa hong) va la loai hoa co tiem nang xuat khau cao Hoa lay on diipc tii rat lau dPi va da hinh nhieu vung san xuat 16n nhu Hai Phong, Quang Ninh, Bac Giang, Son La, Phu Yen va Da Lat Hien nay, dien rich hoa lay On chiem 14% tong dien tich hoa ca nude (Dang Van Dong, 2014) San xuat hoa lay on d nUdc ta hien dang thieu bo giong tot Cac giong dang d nUdc ta chu yeu dupe nhap noi tii Ha Lan, Trung Quoc; mac du co mau sac da dang nhUng thich nghi kem, sinh trUdng yeu, dau la bi kho, chat lupng hoa khong dupe nhu noi nguyen goc Mot so giong dia phUOng dupe nhan giong bang phUOng phap tach cu lien tuc qua nhieu nam nen giong bi thoai hoa va mau sac chu yeu la mau Hon nfla, de giai quyet dupe van de ban quyen giong thi tao giong mdi la yeu cau cap bach hien II VAT LIEU VA PHl/ONG PHAP NGHlfiN ClJU 2.1 Vat lieu nghien cUu Gom 25 giong hoa lay on, co 21 giong nhap noi va giong thu thap nUdc (1 giong tii Hai Phong, giong tii Bac Giang) Cu giong co chu vi 10 -12 cm, da dupe xii ly pha ngu 1Men Nghien cUu Rau qua Tap chi Khoa hoc va Cong nghe Nong nghiep Viet Nam - So 05(126)/202 / Bang Cac giong lay dn lam vat lieu lai tao giong Giong TT KH Nguon goc TT Giong KH Nguon goc Do 09 (DC) GL1 Ha Lan 14 Chinon GL14 Ha Lan Trang Hai Phong GL2 Hai Phong 15 Algarve GL15 Ha Lan Cha Cha GL3 Ha Lan 16 Greenstar GL16 Ha Lan Blues GL4 Ha Lan 17 Blackstar GL17 Ha Lan Flevo eyes GL5 Ha Lan 18 Mascagnir GL18 Ha Lan PR Margareth rose GL6 Ha Lan 19 Internet GL19 Ha Lan San Remo GL7 Ha Lan 20 Do tai vuong Bac Giang GL20 Bac Giang Priscilla GL8 Ha Lan 21 Hong dau tron Bac Giang GL21 Bac Giang Union point GL9 Ha Lan 22 Cam lun Bac giang GL22 Bac Giang 10 Catigo GL10 Ha Lan 23 Flevo souvenir GL23 Ha lan 11 Reve D’amour GL11 Ha Lan 24 Monte Alto GL24 Ha lan 12 Pink Soledo GL12 Ha Lan 25 Amsterdam GL25 Ha lan 13 Limoncello GL13 Ha Lan | 2.2 Phiidng phap nghien cdu - Danh gia nguon vat lieu: Cac giong lay cfn dddc bo tri theo khoi ngau nhien day du vdi lan lap lai, 30 cay/o thi nghiem, dien tich thi nghiem la 1,5 m Quy trinh trong, cham soc ap dung quy trinh ky thuat san xuat hoa thddng pham giong hoa lay On cua Vien Nghien cdu Rau qua (Le Thi Thu Hiidng, 2012) - Ap dung phiidng phap chon giong doi vdi nhiing cay sinh san vo tinh (Chahal and Gosal, 2004): + Lai hiiu tinh gifla cac cap bo me diidc chon de tao hat lai Mlic kho dau la phan chia theo: cap 1: < 5% chieu dai la bi hai, cap 3: >5 den 15% chieu dai la bi hai, cap 5: >15 den 25% chieu dai la bi hai, cap 7: >25 den 50% chieu dai la bi hai, cap 9: >50% chieu dai la bi hai - Phiidng phap xd ly so lieu: Sd dung phan mem IRRISTAT 5.0 va Excel 2013 2.3 Thdi gian va dia diem nghien cdu Nghien cdu diidc thdc hien td 2015 - 2020 tai cac dia diem sau: Vien Nghien cdu Rau qua - Gia Lam Ha Noi; HTX dich vu Hoa va rau sach xa Dinh Tri, Bac Giang; Xa Dong Thai - An Diidng - Hai Phong + Gieo hat va cay dddc vddn chon loc Moi to hdp dddc gieo rieng Moi hat lai nhan dong lai III KET QUA VA THAO LUAN + Moi dong lai diidc hang, sd thi nghiem la hoan toan ngau nhien Cac dong dticfc so sanh vdi giong bo me Chon loc dong lai trien vong Phan nhom cac giong diia vao hinh thai kieu hinh co y nghia rat quan trong qua trinh cai tien giong Cac giong cang tiidng phan ve mot tinh trang mong muon thi hieu qua cai tien giong cang cao Doi vdi cac giong lay dn nghien cdu, chung toi quan tarn den cac tinh trang co lien quan trdc tiep den chat lddng hoa, benh kho dau la va kha nang nhan giong + Cac dong lai trien vong diidc so sanh vdi giong bien tai cac dia phiidng - Cac chi tieu theo doi gom chieu dai la, so la/ cay, dai canh hoa, dai doan mang hoa, so hoa/ « n h , diicmg kinh canh, diidng kinh hoa Moi giong dem 30 cay, 10 cay/o thi nghiem The la danh gia theo bang mo ta cua Quy pham kfeao nghifm tinh khac biet, tinh dong nhat va tinh d n diah cua hoa lay dn (UPOV, 2013): cap diem tii 1, 3c S, tdong dng vdi thang, xien, ngang va ru 3.1 D anh gia nguon vat lieu kh d i dau cho lai tao giong Phan ldn cac giong lay dn nghien cdu co the la hdi cong den cong; mot so giong co the la xien gon hoac thang ddng nhd GL4, GL5, GL6, GL8, GL15 The la thang ddng hoac xien gon se giup hieu suat quang hdp cua cay cao, tang mat va de dang cho bao goi van chuyen Tap chi Khoa hoc va Cong nghe Nong nghiep Viet Nam - So 05(126)/2021 Bang Dac diem nong hoc cua cac giong lay on nghien cdu (Gia Lam - Ha Noi, vu Dong Xuan 2015 - 2016) Mdckho dau la (cap) Chieu dai canh hoa (cm) Chieu dai doan mang hoa (cm) DK canh hoa (cm) GL1 5 93,7 43,3 0,9 GL2 135,7 47,8 GL3 94,7 GL4 GL5 GL6 So hoa/ canh (hoa) So cu con/cay 12,5 10,7 155,3 1,4 15,3 11,5 20,1 28,6 0,9 10,1 9,1 20,6 83,7 31,5 0,8 8,5 8,8 11,3 87,5 34,5 0,7 7,7 9,1 13,5 80,4 30,7 0,8 8,4 8,7 20,3 GL7 110,7 46,3 0,9 10,1 10,5 43,1 GL8 82,3 35,1 0,8 8,1 7,5 GL9 88,5 36,1 0,8 8,3 972 8,7 GL10 90,7 34,8 0,8 GL11 79,0 41,7 0,7 7,0 9,8 603 13,7 GL12 98,3 31,7 0,9 9,8 10,4 53,1 GL13 90,2 30,3 0,8 8,5 9,6 37,3 GL14 130,6 48,5 1,4 13,8 11,5 43,7 GL15 80,5 32,1 0,8 9,8 9,8 7,7 GL16 80,2 31,5 0,9 8,7 9,7 40,3 GL17 120,0 41,6 1,2 12,8 10,6 10,5 GL18 5 108,7 40,7 0,9 11,8 10,5 GL19 100,5 43,7 0,9 11,5 10,3 72 5,1 GL20 123,9 51,5 0,9 13,1 9,0 10,5 GL21 135,4 47,8 1,0 14,0 9,0 60,3 GL22 114,7 44,8 0,8 10,6 9,2 27,7 GL23 87,3 35,8 0,8 8,5 8,5 40,4 GL24 124,8 37,0 1,3 13,5 10,5 35,3 GL25 CV(%) 142 48,3 0,9 14 9,9 28,7 1,98 2,72 2,49 1,48 1,05 11,18 3,33 1,73 0,04 0,26 0,17 5,71 LSDo,o5 Kho dau la cung khac biet ldn gi€fa cac mau giong vdi cap diem tii den Ket qua cho thay cac mau giong GL2, GL3, GL7, GL14, G120, GL21, GL22, GL24 va GL25 it hoac khong man cam vdi kho dau la Trong 25 giong lay On nghien cdu chia lam nhdrn: nhom co chieu dai canh trung binh 130 cm va mPc kho dau la thap rat co y nghia chon giong hoa lay On chat liipng cao 3.2 Ket qua lai hflu tinh Vu Dong Xuan nam 2015-2016, ap dung phiicfng phap thu phan thong thiiPng, chung toi tien hanh lai gifla cac cap bo me dope Ou tien la 90 cap lai vPi so lopng 950 phep lai Sau 40 thu phan, 13 to hop lai co kha nang dau qua, tao hat Bang Ty le dau qua cua cac to hop lai lay On (Gia Lam - Ha Noi, vu Dong Xuan 2015 - 2016) STT $ a Ki hieu Ty le dau qua (%) So hat trung binh/qua Ty le hat chac(%) Ty 1£ mam (%) GL1 GL2 15A01 40,0 56,9 47,0 63,3 GL1 15A03 76,7 76,9 32,2 90,0 GL3 15A04 20,0 59,0 35,6 80,0 GL7 15A05 50,0 95,0 31,26 94,1 GL10 15A06 40,0 63,4 50,7 77,4 GL6 15A07 20,0 48,3 45,5 66,7 GL2 15A08 60,0 100,3 35,9 73,7 GL1 15A09 50,0 116,5 34,8 83,7 GL1 15A10 66,7 58,5 37,9 76,0 GL2 15A11 50,0 34,2 29,8 90,3 GL7 15A12 100,0 108,0 26,9 72,4 GL1 15A13 30,0 70,7 38,7 80,5 GL2 15A14 30,0 102,7 34,7 82,4 GL2 GL6 10 GL3 11 12 13 GL7 Ty le dau qua cua cac to hop lai chenh lech dang ke Cac to hop lai sP dung phan cua giong GL1 cho ti le dau qua cao (GL2 x GL1: 76,7%; GL3 x GL1: 66,7%) Doi vPi cac to hop sO dung giong trang (GL2) va vang (GL3) lam me cung dem lai hieu qua ket hop kha cao So liipng hat mot qua co the thay doi dang k ep h u thuoc vao to hop lai VPi cung giong me la GL3, to hpp lai 15A11 co so hat trung binh la 34 hat/ qua, to hpp lai 15A12 lai co so hat trung binh b 108 hat/qua To hpp co so hat thu dope it nhat la GL3 x GL2: 34,2 hat/qua Doi vPi nhiing to hpp lai sd dung giong GL6 lam me, so hat lai trung binh lPn luta 100 hat/qua Tuy so lopng hat trung binh/qua ■hieu nhiing ti le hat chac chiem tiiOng doi thap dao dong til 24,2 - 50,7% H auhet cac to hpp, hat lai deu mam khoang 15 ogiy sau gieo To hpp co ty le mam cao nhat 15AA5 la 94,1 %, thap nhat la to hpp lai 15A01; C J V Cac to hpp lai 15A03,15A05, 15A06,15A08, ISAM, 15A14 deu dat t)r le mam cao til rat sPm, llwMHt ngar sau gieo (50 - 64%) 3.3 Ket qua tuyen chon d6ng lai Bang So lupng cac dong lai hoa lay on STT To hpp lai 10 11 12 15A01 15A03 15A04 15A05 15A06 15A07 15A08 15A09 15A10 15A11 15A12 15A13 15A14 150101 Tong 13 14 Ky hieu dong lai B C J K D L M E F G H N I O So liipng 18 16 20 16 08 13 22 13 16 12 17 25 14 219 Tap chi Khoa hoc va Cong nghe Nong nghiep Viet Nam - So 05(126)/2021 Sau hai vu trong, moi hat lai dope nhan len mot dong So liipng cac dong lai hoa lay On diipc tach la 219 dong IhP i gian sinh triiPng cua cac dong diipc tinh tii den thu hoach 50%, dao dong tii 85 - 96 Dong co thPi gian sinh triiPng dai la dong 19, J11, K19 (>90 ngay) dai nhat la dong K19 la 96,3 ngay, dong co thPi gian sinh triiPng ngan nhat la cac dong E8, (80 ngay) Cac dong lai thPi gian sinh triiPng 84 - 88 Diia vao danh gia 219 dong lai, giai doan chon 11 dong liu tu co mau sac hoa dep va co nhflng dac diem vifpt troi Chieu dai canh hoa cua cac dong lai dat 123,7 162,5 cm Bon dong lai Bl, K 13,19 va J ll la nhiing dong lai co chieu dai canh hoa noi bat >147,1 cm De danh gia dude cac to hop lai hoa lay On tao ra, can trai qua giai doan (vu): Giai doan gieo hat tao cu bi (6 thang), giai doan tao cu nhp (5 thang) va giai doan tao cu thiidng pham (5 thang) Bang Dac diem sinh tniPng, hinh thai hoa cua cac dong lay on lai (Gia Lam - Ha Noi, vu Dong Xuan 2017 - 2018) TT ThPi gian Chieu Chieu dai canh dai doan Dong d£n thu mang hoa hoach (cm) hoa (cm) (ngay) S6 Cap DiiPng liipng nhiem kinh hoa/ benh hoa canh kho dau (cm) (hoa) la Hinh Hinh dang Mau sac dang canh hoa chinh cua hoa (tarn (gpn song, giac, sao, hoa trdn) trim) Bl 88 150,2 52,5 10 10,8 Do tUdi Sao Gpn song C6 84 134,7 50,2 13 10,1 DP vang Sao Gpn song C ll 84 128,5 52,3 13 10,5 DP cam Sao Tran E8 80 134,2 55,1 12 10,4 Do tiidi Sao Tran K13 85 155,6 63,5 11,5 Hong cam Sao Trdn K19 96 132,4 48,2 15 13,8 Hong Sao Gdn song 19 90 147,1 48,8 10 10,3 Hong Tam giac Trdn J3 85 132,7 45,5 12 10,5 Hong nhat Tam giac Gpn song 111 90 162,5 59,3 11 11,0 Hong cam Sao Gpn song 10 M il 85 135,4 46,3 10,8 Vang Tam giac Gdn song 11 09 80 123,7 53,2 10 10,7 DP Sao Gpn song Cac dong lai deu co doan mang hoa tiiOng doi dai, dat cao nhat la dong K13 (cao 63,5 cm), dong J ll (cao 59,3 cm) Dong J3, M l la dong co chieu dai doan mang hoa thap nhat (chi dat 45,5 - 46,3 cm) Cac dong lai chieu cao cay dat 48,2 - 55,1 cm So hoa/canh: Cac dong co so hoa trung binh/ canh nhieu (>10 hoa/canh) co dong C ll, J ll, K19 co so hoa tren canh 13 - 15 hoa Phan lPn cac dong lai co kieu hoa dang sao, canh hoa gpn song va cac hoa sap xep kieu dich dac Mdc nhiem benh kho dau la cua hau het dong lai tii mule nhe cho den trung binh (cap - 3) Dieu khang dinh tinh chong chiu cua cac dong lai kha ben vdng Ket qua danh gia cho thay, Cac dong lai Bl, C6, 111, 19, K13 co kha nang sinh triiPng tot, mau sac hoa dep hcfn so vPi cac dong khac, cac M t qua ve dac diem hinh thai, thPi gian sinh triiPng va in Pc nhiem sau benh hai cua giong cung the hien liu the hdn han 3.4 Ket qua khao nghiem cd ban cac dong hoa lay dn trien vong Cac dong hoa lay dn Bl, C6, J ll, 19, K13 diipc diia khao nghiem cd ban, giong doi cluing la giong 09 So hoa/cay P cac dong lai so vPi giong doi chdng deu cao hdn, so hoa tren cay P ca dong C6, 19, J ll, K13 dat 15 - 16 hoa/cay cao hdn dong Bl (13 hoa/cay), cao nhat la dong C6 dat 16 hoa/cay Cac dong lai deu co ben hoa so vPi doi chdng dat >9 ngay, do ben hoa cua dong J ll, C6 >11 11 Tap chi Khoa hoc va Cong nghe Ndng nghiep Viet Nam - So 05(126)/202 J Bang Chat hidng hoa cua cac dong lay on trien vpng (Gia Lam - Ha Noi, vu Dong Xuan 2018 - 2019) Cap benh kho dau Id (cap) Dong/giong Bl C6 3 19 Jll K13 DC CV (%) 1 So hoa/cay (hoa) CD doan mang hoa (cm) DK hoa (cm) D6 ben hoa cat Mau sac hoa 58,2 56,8 62,8 9,10 11,2 10,6 11 Do Do v&ng 61,7 61,6 52,7 4,24 2,43 10,3 10,2 10 11 Hong Hong cam Phan hong Do 13 16 15 15 15 12 3,15 0,94 LSDo.05 Til ket qua khao nghiem cO ban cac dong hoa lay On tren, chon dong la C ,19, J11 co kha nang sinh triidng tot, nang suat chat liidng hoa cao, mau sac hoa dep Cac dong hoa lay dn C ,19, J ll diidc doi ten gi6ng la: GL2-20, GL2-21, GL2-22, cac giong tren dilcfc diia di khao nghiem san xuat de cong nhan giong 3.5 Ket qua khao nghiem cac dong lai trien vong tai m ot so dia phiidng Ba giong hoa lay dn mcfi GL2-20, GL2-21 va GL2-22 diidc khao nghiem d mot so dia phiidng la Hai Phong, Bac Giang va Ha Noi, giong doi cluing 9,70 2,68 0,62 la giong lay dn 09 Ket qua danh gia cho thay dac diem viidt troi cua ca giong ve kha nang chong chiu benh kho dau la va nang suat, chat lifpng hoa Mdc bi benh kho dau la deu cap nhe doi vdi ca giong tai cac dia phiidng (cap 1) Mau sac hoa va chat ltidng hoa cua cac giong khao nghiem san xuat dat tiidng td nhii ket qua danh gia va khao nghiem ban dau Cac giong deu co so hoa/canh dat tii 15 - 17 hoa Ty le hoa thu hoach cua cac giong trien vpng cao hdn giong doi cluing lii 15 -16% cac dia phiidng Ty le hoa loai cung cao hdn td 46 - 57% Bang Nang suat chat liidng cua cac giong hoa lay dn trien vpng tai cac dia phiidng vu Dong Xuan 2019 - 2020 Chat liidng hoa Dia diem HaNoi Hai Phong Blc j: G n g Giong Cap benh khd dau GL2-20 GL2-21 GL2-22 DC GL2-20 1 GL2-21 1 GL2-22 DC GL2-20 GL2-21 GL2-22 1 DC Nang suat hoa Ty le hoa Dtfdng thu hoach kthh hoa So vdi (cm) Ty le (%) DC (%) 115 11,5 93,2 Mdu sac hoa So hoa tren cay (hoa) Do vang Hong Hong cam Do 16 15 16 11 Do vang Hong Hong cam 17 16 17 Do Do vang Hong Hong cam 12 17 11,2 10,8 10,6 9,4 10,4 16 16 13 10,6 10,5 9,2 Do 10,5 10,7 9,2 Qm dm: Hoa loai b chieu dai canh >100 cm, so hoa/canh >13 hoa 92,7 90,7 80,5 92,5 93,5 91,8 80,8 93,2 93,8 91,6 81,4 115 115 100 115 116 114 100 116 115 114 100 Ty le hoa loai Ty le (%) So vdi DC (%) 82,2 85,6 85,6 146 146 152 56,3 100 86,3 88,9 88,9 58,6 88,1 90,1 147 151 152 100 153 90,1 57,3 157 157 100 Tap chi Khoa hoc va Cong n ghi Nong nghiep Viet Nam -So05(126)/2021 Giufa cac dia diem thi d vung Bac Giang va Hai Phong nang suat va chat ltfOng hoa cua cac giong deu cao hcfn vung Ha Noi dieu kien hau vung d cac dia diem tren phu hop hdn vung Ha Noi, ket qua hoan toan phu hop vdi cac ket qua nghien cdu ve cay hoa lay On iv k e t l u An Danh gia dac diem nong hoc cua 25 giong hoa lay on da xac dinh diicfc cac giong GL2, GL14, GL20, GL21, GL25 co chieu dai canh hoa >130 cm, so hoa/ canh dat tii 13,1-15,3 hoa va mdc kho dau la d cap rat co y nghla chon giong hoa lay on chat liiong cao Lai hflu tinh tao diioc 13 to hop lai, tach diiqc 219 dong lai Danh gia sinh triidng, hinh thai va kha nang chong chiu sau benh chon ditcfc dong lai lay On trien vong la Bl, C6, J ll, 19, K13 co mau sac hoa dep, chieu dai canh hoa dat 123,7 - 162,5 cm, chieu dai doan mang hoa tit 56,8 - 62,8 cm, so hoa/canh >13 hoa, benh kho dau la d cap nhe -3 Ket qua khao nghiem tai mot so dia phiiong cho thay giong lay On nidi, GL2-20 co hoa mau do/ vang, GL2-21 hoa mau hong, GL2-22 hoa mau hong cam; hoa dep, co til 15 - 17 hoa/canh, ti le hoa cho thu hoach dat til 90,7 - 93,8%; cay sinh trildng tot, it bi benh kho dau la TAl LIEU THAM KHAO Dang Van Dong, 2014 Thifc trang va dinh hildng nghien cdu, phat trien hoa, cay canh Viet Nam In ky yeu hoi thao: Thtfc trang va dinh htidng nghien cdu, sdn xuat va xuc tien thtidng mai nganh hoa, cay canh d Viet Nam Vien Nghien ctiu Rau Qua, thang 12-2014 Le Thi Thu HiiOng, 2012 Bao cao t6ng ket du an “Hoan thien quy trinh ky thuat va phat trien san xuat giong hoa lay on 09” DO an SXTN cap Bp giai doan 2011-2013 Chahal G.S., S.S Gosal, 2004 Principle and Procedures of Plant Breeding Alpha Science international Ltd, Harrow U.K Statists, 2019 Value of the import and export of gladioli bulbs in the Netherlands from 2008 to 2017 (in thousand euros) Avaiable from: https://www statista.com/statistics/581484/valueoftheim port and-export-of-gladioli-bulbs-in-the-netherlands/ [Accessed 14/5/2019] UPOV, 2013 Quy pham khao nghiem tinh khac biet, tinh dong nhat va tinh on dinh hoa lay dn (Gladiolus L.) Hiep hoi quoc te ve bao ho giong cay mdi UPOV Geneva, 20-03-2013 Breeding o f new gladiolus variety with high quality and non-scorch leaf Nguyen Thi Hong Nhung, Bui Thi Hong Nhuy, Bui Thi Hong, Dang Van Dong Abstract Gladiolus (Gladiolus sp.) is a sexually reproducing plant but propagated by asexual method In the period 2015-2020, the Fruit and Vegetable Research Institute conducted the breeding of gladiolus by sexual hybridization from a material source including 25 gladiolus varieties collected in country and introduced from overseas The results created new gladiolus varieties, GL2-20 with red/yellow flowers, GL2-21 with pink flowers, and GL2-22 with pink/orange; beautiful flowers, 15-17 flowers per spike, the rate of harvested flowers reached 90.7-93.8%; The plants grew well, non-scorch leaf disease Keywords: Gladiolus, hybrid lines, new varieties, sexual hybridization, testing Ngay nhan bai: 25/3/2020 Ngayphan bien: 10/4/2020 Ngdcii phan bien: TS Bui Quang Dang Ngay duyet dang: 02/5/2020 13 ... 15 - 16 hoa/ cay cao hdn dong Bl (13 hoa/ cay), cao nhat la dong C6 dat 16 hoa/ cay Cac dong lai deu co ben hoa so vPi doi chdng dat >9 ngay, do ben hoa cua dong J ll, C6 >11 11 Tap chi Khoa hoc... canh hoa >130 cm, so hoa/ canh dat tii 13,1-15,3 hoa va mdc kho dau la d cap rat co y nghla chon giong hoa lay on chat liiong cao Lai hflu tinh tao diioc 13 to hop lai, tach diiqc 219 dong lai. .. dong lai chieu cao cay dat 48,2 - 55,1 cm So hoa/ canh: Cac dong co so hoa trung binh/ canh nhieu (>10 hoa/ canh) co dong C ll, J ll, K19 co so hoa tren canh 13 - 15 hoa Phan lPn cac dong lai co
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