The planting materials approved by the Rubber Board are classified in to three categories I, II and III.

Category I comprises of materials approved for large scale planting. However, it is strongly recommended that these may be used to cover only 50% of the total area of any estate or small holding.

Category II comprises clones, which have shown their merit in performance in India over long term or medium term periods. It is recommended that three or more of these clones be used to plant up to 50 per cent of the total area of any estate or small holding.

Category III planting materials are divided into (a), (b), (c) and (d). Materials under division (a) are those which have held out promise of good performance in small-scale trials, and over short term in some large scale trials in India or abroad. Hence these are approved only for experimental planting.

Those under division (b) are old selections having promising localised performance or having desirable secondary attributes. In regions where these clones are showing very good performance, no restriction in planting is insisted.

Modern clones with moderate scale performance are included in division (c). Other experimental clones of promising yield and/or desirable secondary characters with limited data are included in division (d). Selections from any of these are recommended for very small scale planting not exceeding 15 per cent of the total area.

Category I

PB 260: Released from Prang Besar Estate, Malaysia. Parentage Tjir 1 x Gl 1A high yielding clone having good secondary characters.  On farm evaluation(1631 kg/ha/yr)

RRII 105: Released from Rubber Research Institute of India. Parentage Tjir 1 x Gl 1. Clone coming under Category I. Drought tolerant. Good branching with strong union. The highest yielding clone showing stability in yield. TPD On farm evaluation(2210 kg/ha/yr)

RRII 414: Released from Rubber Research Institute of India. Parentage RRII 105 X RRIC 100. Clone coming under Category 1. A high yielding clone with vigorous growth and early tappability. Wood yield in terms of bole volume is high. Incidence of pink disease and abnormal leaf fall are moderate while the clone is relatively tolerant to Corynespora

RRII 417: Released from Rubber Research Institute of India. Parentage RRII 105 x RRIC 100. Clone coming under Category I. A vigorous and high yielding clone with above average tolerance to wind. Quality of wood is good in terms of high density and better processability. Incidence of abnormal leaf fall is low to moderate. Moderately susceptible to Corynespora.

RRII 422: Released from Rubber Research Institute of India. Parentage RRII 105 X RRIC 100. Clone coming under Category I. A clone with vigorous growth and high yield. Incidence of Pink disease is low. Trees are slightly short in stature with high leaf retention in immature phase.

RRII 430: Released from Rubber Research Institute of India. Parentage RRII 105 x RRIC 100. Clone coming under Category I. A high yielding and drought tolerant clone. This clone is vigorous in growth leading to early tappability. Incidence of abnormal leaf fall, pink disease and Corynespora leaf disease are low.

Category II

GT 1: t is a rubber clone coming under the category 11 recommended for cultivation in Kerala.

PB 217: t is a rubber clone coming under the category 11 recommended for cultivation in Kerala.

PB 255: t is a rubber clone coming under the category 11 recommended for cultivation in Kerala.

PB 280: t is a rubber clone coming under the category 11 recommended for cultivation in Kerala.

PB 28-59: t is a rubber clone coming under the category 11 recommended for cultivation in Kerala.

PB 312: t is a rubber clone coming under the category 11 recommended for cultivation in Kerala.

PB 314: t is a rubber clone coming under the category 11 recommended for cultivation in Kerala.

RRII 203: Released from Rubber Research Institute of India. Parentage PB 86 x Mil 3/2. Clone coming under Category II. Latex coagulation shows black discolouration which does not affect the quality of rubber. Can be used as a latex timber clone.

RRII 5: Released from Rubber Research Institute of India. Primary clone. Clone coming under Category II

RRIM 600: It is a rubber clone coming under the category 11 recommended for cultivation in Kerala.

Category III

BPM 24: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

IRCA 109: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

IRCA 130: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

IRCA III: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

KRS 163: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

PB 235: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

PB 311: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

PB 330: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

PB 5-51: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

PB 86: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

PR 107: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

PR 255: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

PR 261: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

RRIC 100: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

RRIC 102: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

RRIC 130: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

RRII 118: Released from Rubber Research Institute of India. Parentage Mil 3/2 x Hil 28. Clone coming under Category III

RRII 208: Released from Rubber Research Institute of India. Parentage Mil 3/2 x AVROS 255. Clone coming under Category III

RRII 300: Released from Rubber Research Institute of India. Parentage Tjir 1 x PR 107. Clone coming under Category III. A hardy clone.

RRII 429: Released from Rubber Research Institute of India. Parentage RRII 105 X RRIC 100. Clone coming under Category III

RRIM 605: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

RRIM 701: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

RRIM 703: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

RRIM 712: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.

SC ATC 88-13: It is a rubber clone coming under the category 111 recommended for cultivation in Kerala.